PLZ HELP
What are differences between spitfire and biplane?

Answers

Answer 1

Answer:

Spitfire- 1 single wing

Biplane- 2 wings stacked

Explanation:

Answer 2

Final answer:

Spitfires and biplanes were different types of aircraft used during World War II. Spitfires were advanced fighter planes used by the RAF, known for their speed and firepower. Biplanes were older, slower, and less advanced, with a distinctive two-wing design.

Explanation:

Spitfire and biplane are two different types of aircraft used during World War II. A Spitfire was a single-seat fighter plane used by the Royal Air Force (RAF) in Britain, while a biplane was a two-winged aircraft used by various countries during the war.

The Spitfire was known for its speed, maneuverability, and firepower. It was an advanced aircraft for its time and played a crucial role in defending Britain during the Battle of Britain.

On the other hand, biplanes were older, slower, and less advanced compared to Spitfires. They were used for various purposes, including reconnaissance, bombing, and ground attack.

Biplanes had a distinctive two-wing design, with one wing stacked on top of the other, providing stability and lift. However, they were gradually phased out during the war as more advanced monoplane designs like the Spitfire emerged.


Related Questions

how did settling on the great plains affect the environment?

Answers

It added new was for people to burn the woods and harvest the wildlife so it evolved some so it’d be able to keep up

Final answer:

Settling on the Great Plains affected the environment through disrupted buffalo migration, changes in Native American lifestyles, and the Dust Bowl caused by over-farming and drought.

Explanation:

Settling on the Great Plains had a significant impact on the environment. As settlers arrived and disrupted buffalo migration patterns, the region's earliest inhabitants, the Native Americans, were affected. The government enforced policies to confine them to reservations and encouraged them to cultivate land, which led to the decline of their traditional hunting and roaming lifestyle. Additionally, the Dust Bowl, caused by over-farming, drought, and the depletion of topsoil, further devastated the environment in the Great Plains.

which statement best describes the significance of suleyman the magnificent

Answers

Answer:

B. Suleyman the Magnificent led the Ottoman Turks to the height of power

Explanation:

Suleyman the Magnificent is one of the most, if not the most beloved historical figure among the Turkish people. There are numerous reasons for this. Unlike the typical Turkic ruler, Suleyman was very well educated, which led to him making multiple reforms and wise decisions. He prompted cultural development of the empire. Suleyman was a big admirer of the arts, so he lifted the significance of the arts in the society, as well as getting artists to make numerous beautiful things, especially around the capital. He was also a great military tactician, and managed to expand the empire further north in the Balkan Peninsula by defeating the Serbians and capturing Belgrade.

Answer:

Süleyman the magnificent led the ottoman Turks to the height of power

Explanation:

Apex:)

The speaker of which statement would be best deserved by joining an interest group

Answers

The answer to your question is a

Correct answer is A .

In a direct primary, voters
A select a nominee through delegate
B debate as a group to nominate a candidate
C vote for a nominee themselves, not through a delegate
D vote for their candidate in the general election

Answers

Answer:

In direct primary voters voters are voting for a nominee themselves, not through a delegate

Explanation:

Direct primary is a preliminary election whereby voters decide their party's candidates. In direct primary voters voters are voting for a nominee themselves, not through a delegate

The voters in the direct primary voting cast the votes for their nominees instead of any voting from the delegates.

Option C is the correct answer.

What is meant by voting?

Voting is done at the time of elections where the individuals of the country cast their votes for the suitable person in respect of the concerned elections.

In direct primary voting, the votes are directly cast by the voters from the office. The candidates for the elections are the nominees. The election of authorized persons for local authorities is chosen through direct voting.

Therefore, voting for nominees without any involvement from the delegates is considered a direct primary.

Learn more about the direct voting in the related link:

https://brainly.com/question/3981011

#SPJ5

Which of the following was not an effect of the Russian Revolution of 1917?

Answers

Answer:

No answer choices are there.

World war 1

-Gradpoint

What method of manufacturing, introduced in the early 1800s, made mass production possible

Answers

Interchangeable parts allowed mass production possible in the early 1800s, these parts allowed unskilled workers to easily produce muskets in a short time. It has changed over time, but helped easily produce products in an assembly.

The method of manufacturing, introduced in the early 1800s, that made mass production possible was interchangeable parts.

Interchangeable parts are parts that can be produced to the same exact specifications, so that they can be assembled without any fitting or modification. This method of production was much faster and more efficient than traditional methods, and it allowed for the production of goods on a much larger scale.

Interchangeable parts were first developed in the United States in the early 1800s, and they were widely used in the production of firearms and other machinery. The first assembly line was introduced in 1810 by Eli Whitney, who used it to produce muskets for the US government. The assembly line was later used to produce other products, such as sewing machines and bicycles.

The development of interchangeable parts and the assembly line revolutionized manufacturing and led to the rise of mass production. Mass production allowed for the production of goods at a lower cost and in larger quantities than ever before. This made goods more affordable for consumers and helped to fuel the growth of the American economy.

To know more about production possible

https://brainly.com/question/989389

#SPJ12

Please help I need an answer!!!

Explain why Gandhi uses the phrase “mad risk” to describe his pursuit of nonviolence. Use details from Letter to Viceroy, Lord Irwin to support your explanation.

Answers

Answer:

pursuing non violence would be a risk because it might not always work to solve issues and people might become violent to him and he'll get hurt

Explanation:

The killing of Jews by the Nazis during World War II is an example of _____.

A) oppression
B) fundamentalism
C) genocide
D) apartheid

Answers

Answer:

the answer is C) genocide

Explanation:

The answer would be C. genocide

Plz help ASAP it’s worth 20% of grade

Answers

Answer:

your answer would be B. Many extended their control and left larger kingdoms to their heirs.

Marco Polo influenced the Age of Exploration by

Answers

Answer:

The book opens with a preface describing his father and uncle traveling to Bolghar where Prince Berke Khan lived. A year later, they went to Ukek[56] and continued to Bukhara. There, an envoy from the Levant invited them to meet Kublai Khan, who had never met Europeans.[57] In 1266, they reached the seat of Kublai Khan at Dadu, present day Beijing, China. Kublai received the brothers with hospitality and asked them many questions regarding the European legal and political system.[58] He also inquired about the Pope and Church in Rome.[59] After the brothers answered the questions he tasked them with delivering a letter to the Pope, requesting 100 Christians acquainted with the Seven Arts (grammar, rhetoric, logic, geometry, arithmetic, music and astronomy). Kublai Khan requested that an envoy bring him back oil of the lamp in Jerusalem.[60] The long sede vacante between the death of Pope Clement IV in 1268 and the election of his successor delayed the Polos in fulfilling Kublai's request. They followed the suggestion of Theobald Visconti, then papal legate for the realm of Egypt, and returned to Venice in 1269 or 1270 to await the nomination of the new Pope, which allowed Marco to see his father for the first time, at the age of fifteen or sixteen.[61]

Explanation:

chapter 9 sections 2 & 3​

Answers

I don’t see a question

Where is the question ?

You can choose any two district points on a line to calculate the slope
(True or False)​

Answers

Answer:

True

Explanation:

How did colonization expand markets for European powers?
Each person in a conquered region was also a potential entrepreneur.
Each person in a conquered region was also a potential stock holder.
Each person in a conquered region was also a potential labor leader.
Each person in a conquered region was also a potential customer.

Answers

Answer:

Each person in a conquered region was also a potential customer

Explanation:

The colonization gave the European colonial powers great advantage and opportunity to get a lot of wealth. The reason for this was that they were able to get the natural resources and raw materials from their colonies for free. They had well established manufacturing plants, so they were manufacturing the natural resources and raw materials and turning them into final products. Then they used the people in their colonies to make more profit by selling them the manufactured goods. This worked perfectly well for the colonial powers, as they were the ones that had the industry and the materials to produce, while the people in the colonies where reliant on them for goods as they did not had anything to be able to compete with it.

The answer is:

Each person in a conquered region was also a potential customer.

What did mussolini and the black shirts promise the italian people

Answers

Answer:

Mussolini and the Black Shirts (a Fascist party militants organized by Mussolini)  promised to..

End corruption

replacing turmoil with order

reviving Roman greatness

just a little extra:  Black shirts rejected the democratic process in favor of violent action.  They targeted Leftist, elected officials, and members of the farmer's cooperatives.

Explanation:

SUUR
6. Women in developing nations
(A.) often cannot obtain education, property rights, or decent jobs.
B. are always able to move and act freely without subordination to men.
C. have never been able to attain leadership roles in their own countries.
D. are universally protected by laws that guarantee equal pay for equal work.

7. Many developing countries have experienced
Aya “graying" of their populations.
B. rapid population growth.
C. widespread economic prosperity.
D. consistently declining food prices.

8. Current population trends across the globe will cause which of the following?
A. stable migration patterns
B. decreased environmental problems
C. increased urban populations
D. overall younger global populations
Copyright o McGraw-Hill Education. Permission is granted to reproduce for classroom use.

9. Nongovernmental and transnational organizations
A. have failed to gain representation at the UN.
B. never draw their memberships from just one country.
C. have maintained small memberships since 1910.
D. include groups that work to promote peace and solve international crises.

Answers

Answer:

(A.) often cannot obtain education, property rights, or decent jobs.

B. rapid population growth.

C. increased urban populations

I don't know about the last one

Explanation:

The answers of the given questions are as follows,

A.  are universally protected by laws that guarantee equal pay for equal work.

B. rapid population growth.

C. increased urban populations

D include groups that work to promote peace and solve international crises.

What is a developing country?

A developing country also called a less developed country or emerging market has a lower gross domestic product (GDP) than developed countries, with a less mature and sophisticated economy.

A developing country is one with comparatively low economic output. There has been a lot of debate as to where to draw the line between a developed country and a developing country.

Learn more about a developing country here,

https://brainly.com/question/4691250

#SPJ2

which of the following states was one of the original 13 colonies​

Answers

Delaware, Pennsylvania, Massachusetts, New Jersey, Georgia, Connecticut, Maryland, South Carolina, New Hampshire, Virginia, New York, North Carolina, and Rhode Island

hope that helped <3

Answer: Virginia, Massachusetts, New Hampshire, Maryland, Connecticut, Rhode Island, Delaware, North Carolina, South Carolina, New Jersey, New York, Pennsylvania, and Georgia

Explanation:

Which of the following is an accurate description of the Industrial Revolution? A. the transition from an economy based on agriculture to one based on manufacturing B. a huge wave of immigration that dramatically changed the labor market C. the intense competition among large corporations for new customers D. a war between the workers and the rich industrialists

Answers

Answer:

I believe it might be D

Explanation:

I think it's D b/c it's called the Industrial Revolution. SO wouldn't the answer have something to do with the revolution? (D) something to do with   the the Industrial Revolution so wouldn't make sense that that be the answer. Also revolution is another word for war. Industrial is another word for business. (D)  has to do with war, workers, and industrialist, so it makes sense that the answer would be (D).

Answer: A.) transition from an economy based on agriculture to one based on manufacturing

Explanation: It was on study island lol and it's correct don't worry.

Which was unique about the 2008 presidential election?

(A) neither candidate had served in an election office before.

(B)For the first time neither party nominate a white man for president.

(C) it was the first election in which a woman had a very good chance of winning a major parties nomination.

(D) The republican party nominated an African-American for the first time.

Answers

Answer: D.

Explanation: he was the first African American President

Describe the supreme court position on student speech expression over the past 50 years

Answers

Libertad de expresión y prensa cada persona tendrá el derecho de hablar escribir y publicar lo que piense sobre.

The Supreme Court's stance on student speech expression has varied over time, with landmark cases from Tinker v. Des Moines establishing the right to free speech in schools, to Bethel and Hazelwood limiting that speech, to the recent Mahanoy Area School District v. B.L. reinforcing off-campus speech rights.

Over the past 50 years, the Supreme Court's position on student speech expression has evolved, marking significant rulings that protect, define, and sometimes limit students' speech rights within educational settings. The landmark case Tinker v. Des Moines Independent School District (1969) set a precedent that students do not "shed their constitutional rights to freedom of speech or expression at the schoolhouse gate." This stance on free speech was later limited by Bethel School District No. 403 v. Fraser (1986) and Hazelwood School District v. Kuhlmeier (1988), which clarified that schools could regulate speech that was vulgar, offensive, or not in line with legitimate pedagogical concerns. Nevertheless, in 2021, the case Mahanoy Area School District v. B.L. reasserted the rights of students to free speech, with the court ruling that a student could not be disciplined for off-campus speech.

what was the primary purpose of the ten commandments?​

Answers

The primary purpose for the Ten Commandments was to describe God's rules of behavior

What is a market demand schedule?

Answers

Answer:

A table that lists that quantity of a good all consumers in a market will buy at every different price.

Explanation:

A market demand schedule can be described as a schedule that shows the quantity of a good that consumers would purchase at different price levels.

The market schedule can be represented in a tabular form. For instance the good we want to create a schedule for is gasoline per gallon.

The market demand schedule for gasoline would show us that at every change in price, the quantity that was demanded of the gasoline also changed.

Read more on https://brainly.com/question/14750729?referrer=searchResults

How did the printing press help the Scientific Revolution?
A.
The printing press made it easier for scientists to conduct initial experiments.
B.
The printing press allowed mass production of books that spread new scientific ideas.
C.
The printing press helped scientists keep their findings private.
D.
The printing press enabled scientists to create scientific societies to discuss their works.

Answers

Answer:

B the printing press allowed mass production of books that spread new scientific ideas

Final answer:

Option B, The printing press enabled the mass production of books, which significantly spread new scientific ideas and contributed to the Scientific Revolution by making works by pioneering scientists widely available.

Explanation:

The printing press, invented by Johannes Gutenberg in the 15th century, played a significant role in the Scientific Revolution. The correct answer to how the printing press helped the Scientific Revolution is B. The printing press allowed mass production of books that spread new scientific ideas. This invention facilitated the rapid dissemination of new theories and empirical data, paving the way for widespread literacy and intellectual engagement. As a result of the printing press, works by pioneering scientists could be widely distributed, scrutinized, and built upon, contributing to the transition from the Renaissance to the Age of Enlightenment and boosting the evolution of modern science.

Before Gutenberg's printing press, texts were copied by hand, which was labor-intensive and slow. With the advent of the print age, information could be mass-produced and reached a broader audience, leading to increased literacy and more rapid scientific progress. The printing press therefore was crucial in breaking down barriers to knowledge that had existed during the manuscript era.

HELP PLEASE!! 20 PTS MARKING BRAINLIEST


Write a thesis statement based on Biplanes vs. Spitfires

Answers

Biplanes (and triplanes) became (nearly) extinct not because high strength materials (like composites) were not available, but because they became available.

One of the major reasons for use of biplanes in the early days of aviation was that the materials available were of insufficient strength for the (wing) designs used.

The major disadvantage of biplanes (or triplanes) is aerodynamic- it produces a lot of drag compared to the monoplane and the wings interfere with each other.

So, the biplane was an (aerodynamically) inefficient solution to a structural problem. As higher strength materials like Aluminum became widespread, the biplanes fell out of favor.

While they can be revived, I don't see why someone would do that, except for nostalgia (or some special uses, like aerobatics).

There are some companies who manufacture or restore biplanes, but they usually don't use (modern materials like) composites, though modern avionics are used.

Final answer:

A thesis statement that the advancements of Spitfires over biplanes played a significant role in the RAF's success during World War II would set up an essay to explore this technology shift in air combat.

Explanation:

When comparing biplanes and Spitfires, an effective thesis statement might argue that the technological advancements of Spitfires over biplanes led to a significant shift in air combat strategies during World War II. The thesis can focus on the contrasts in design, speed, agility, and firepower, which ultimately played a pivotal role in the RAF's success during the Battle of Britain.

It's essential to construct a thesis that presents a clear argument, such as: "The evolution from biplanes to more advanced Spitfires was a critical factor in the RAF's ability to defend Britain during World War II, as it signified major improvements in speed, armament, and pilot protection that biplanes could not match."

This statement sets up an essay that would not only discuss the advancements of Spitfires over biplanes but would also provide historical context and examples of how these advancements contributed to the effectiveness of the RAF.

A careful reader might disagree with the degree to which Spitfires were superior, providing room for debate. Additionally, the graphic organizer and consideration of opposing arguments could further strengthen the thesis by anticipating counterarguments and reinforcing the original position.

Guided reading activity 15-3

Answers

Answer:s

Explanation:

Final answer:

This activity is part of a college-level English course focused on improving active and critical reading skills through collaborative activities, including the use of open educational resources.

Explanation:

The student inquiry relates to a guided reading activity and appears to be part of a college-level English or literacy course. This activity focuses on developing critical reading skills and encourages collaboration and discussion among students. The purpose seems to be to help students become more active readers by engaging with online resources, potentially involving a textbook chapter with the title 15.7: Suggested Short Readings and an exploration activity from a section titled 15.5: Exploring Further, both of which carry Creative Commons and CK-12 licenses, respectively.

Students are advised to perform the activity in small groups or pairs, partake in interactive exercises, and even devise their own activities to promote active reading. Additionally, comprehension of the chapter can be assessed through a quiz related to the chapter's content. The materials and prompts mentioned suggest a focus on critical engagement with texts, collaborative learning, and the use of open educational resources such as LibreTexts to enhance reading comprehension and foster student success.

The Korean war was relatively short but exceptionally bloody. Nearly ___ million people died. More than half of these about 10 percent of Korea's prewar population-were ___. (this rate of civilian casualties was higher than world war 2's and vietnam's.) Almost ___ Americans died in action in korea, and more that ____ were Wounded.

fill in the blacks

Answers

Answer: The Korean war was relatively short but exceptionally bloody. Nearly _5__ million people died. More than half of these about 10 percent of Korea's prewar population-were _civilians__. (this rate of civilian casualties was higher than world war 2's and vietnam's.) Almost _40,000__ Americans died in action in korea, and more than __100,000__ were Wounded.

Explanation:

Answer:

The Korean War was relatively short but exceptionally bloody. Nearly 5 million people died. More than half of these about 10 percent of Korea's prewar population-were civilian (this rate of civilian casualties was higher than World War II's and Vietnam's). Almost 40,000 Americans died in action in Korea, and more that 100,000 were wounded.  

Explanation:

The Korean War took place between 1950 and 1953. It faced the Republic of Korea (or South Korea), supported by the armed forces of several countries commanded by the United States; against the Democratic People's Republic of Korea (or North Korea), supported by the People's Republic of China and the Soviet Union. The war was one of the earliest episodes of the Cold War. Killing more than 3 million civilians and almost 15% of the population of the North, it constitutes one of the most bloody wars in history.

Match the following items.


1. helped owners who expected to lose their homes

2. FDR's starting program for recovery

3. provided jobs in conservation
4. gave money to states for work relief

5. gave relief to farmers

6. curbed competition practices in big business

7. aid to elderly Americans

8.flood control and conservations of resources

A.Social Security act

B.First hundred days

C.Federal emergency relief

D.Agriculture Adjustment Act

E.National industrial recovery act

F.Civilian conservation corps

G.Home loan bank system

H.Tennessee Valley Authority

Answers

Answer:

Hope it helps!

Helped owners who expected to lose their homes-Social Security act. FDR's starting program for recovery-National industrial recovery act. Provided jobs in conservation-Civilian conservation corps. gave money to states for work relief-Home loan bank system. curbed competition practices in big business-Federal emergency relief.

What was the federal emergency?

A component of the New Deal under President Franklin Delano Roosevelt was the Federal Emergency Relief Administration. Roosevelt believed that the New Deal would assist Americans cope with the Great Depression, put an end to the current economic crisis, and help to avert the occurrence of another depression in the future.

Direct cash support programs run by the FERA were dropped in favor of work relief initiatives. The FERA had little impact in North Carolina, despite providing assistance to thousands of residents.

Congress has given the Federal Highway Administration the authority to repair or rehabilitate federal-aid roadways that have sustained significant damage as a direct result of a declared catastrophe through the Emergency Relief Program.

Thus, aid to elderly Americans-First hundred days. flood control and conservation of resources-Agriculture Adjustment Act.

For more information about federal emergency, click here

https://brainly.com/question/1198580

#SPJ3

Why was the yalta conference so important for the future politics in europe

Answers

Answer: The February 1945 Yalta Conference was the second wartime meeting of British Prime Minister Winston Churchill, Soviet Premier Joseph Stalin and U.S. President Franklin D. Roosevelt.

Explanation: The February 1945 Yalta Conference was the second wartime meeting of British Prime Minister Winston Churchill, Soviet Premier Joseph Stalin and U.S. President Franklin D. Roosevelt. During the conference, the three leaders agreed to demand Germany's unconditional surrender and began plans for a post-war world.

The first African American regiment to fight for the Union army in the Civil War was the __________.
A.
Kansas Colored Volunteer Infantry Regiment
B.
Massachusetts 54th Regiment
C.
29th Connecticut Colored Volunteer Infantry Regiment
D.
Company of the North Carolina Colored Volunteers

Answers

B) Massachusetts 54th Regiment

Answer:

Kansas Colored Volunteer Infantry Regiment ( A )

Explanation:

The Kansas colored volunteer infantry regiment was the 1st infantry regiment that was the first African American regiment to see combat during the civil war. the lowest time of the Regiment was at the battle of poison spring where the regiment suffered a heavy loss of more than half of its soldiers in the battle.this was recorded as the highest loss by any regiment from Kansas during the civil war.

senator James Harry lane was the one who organized/mustered this 1st Kansas colored volunteer infantry  at fort Scott, Kansas, they were grouped into six companies ( battalion ) on January 1863 for three years.

How did the scandals surrounding the Grant administration and the Panic of 1873 affect politics in the United States? Democrats regained control of Southern governments. Republicans retained control of Southern governments. President Grant was impeached. Jim Crow laws were enforced.

Answers

Answer:

Democrats regained control

Explanation:

economic depression weakened the Republican party

What was one way United States Participation in World War II affected the American economy

Answers

Answer:

we spent so much money on materials and supplies for troops we lost the complete value of the the dollar bill

Explanation:

Other Questions
How many 1/3 cups servings are in 4 cupsA 1/12B 3/4C 4D 12Help with 17, 18,34,35 Please 1. A factory makes bicycles. Out of 300 bicycles, 2 were found to have defective brakes. a. What is the experimental probability that the next bike manufactured will have defective brakes? b. Predict how many bikes out of 2,100 will have defective brakes.*Please explain how you found the answers* Which aspect of the story is an example of logos in "Top of the Food Chain"? A.The narrator gives information about the sequence of events that happened in the story. B.The narrator establishes his credibility by appearing to understand complicated science. C.The narrator makes the audience feel sorry for the people who are suffering in the story. D.The narrator shows his unreliability by not realizing the problems were caused by him. Which of the Five Tribes created a legislative branch comprised of a House of Kings and a House of Warriors?A.the ChickasawB.the CreekC.the SeminoleD.the Choctaw Identify the factors of 4x2 + 12x + 9(4x 3)(x 3)(4x + 3)(x + 3)(2x 3)(2x 3)(2x + 3)(2x + 3) Fred and Stacey both have books to read over the summer. Fred has read 54 pages and Stacey has read 63 pages. What is the ratio of the number of pages Stacey has read to the number of pages Fred has read? A. 7:6 B. 54:1 C. 1:54 D. 6:7 can someone please help me !! The length of a rectangle is represented by (6x 2), and the width is represented by (x 1). Which expression best represents the area of the rectangle Find the zeros of the function in the interval [-2x, 2].f(x)=3 cos x Translate the phrase into an algebraic expressionthe sum of x and 6 Use the circled numbers in the entry below to match that number to the corresponding part of the dictionary entry. Note that each number in the illustration refers to the material on its left. Adapted from a definition from Webster's Revised Unabridged Dictionary (G and C Merriam Co., 19entry word etymology illustrative quote synonym respellingpart of speech alternate forms definition12345678 In sexual reproduction, gametes join to create a new life. The new cells haveA- one third the chromosomes from each parentB- half the chromosomes from each parentC-one fourth the chromosomes from each parentD-twice the chromosomes of each parent Quieres que ellos (trabajar).- trabajaban - trabajaron- trabajen- trabajanEs dificil que el (aprender) otra cosa. - aprenda - alrendi- sorensen- aprenda find the area of the parallelogram28 square units14 square units24 square units48 square units Which of the following statements is true about what happens during a chemical reaction? Which of these is not a successful budgeting strategy?A: keep some extra money in your budget for emergencies B:think about which items are your most important needs C:revisit your budget regularly and make adjustments D: pay with a credit card if you have a hard time sticking to a budget Identify the missing numbers for Vanadium (V) for "A, ""B," and "C" in the chart below. The first number in the answer selection represents "A", the second number in the answer selection represents "B," and the third number in the answer selection represents "C." Find the surface area 12cm 15cm 14cm 14cm Select the different types of taxes.salespropertyelectiveincomevoluntary Express 120% as a fraction in simplest form