Organs of excretion make up the excretory system. They include the kidneys, large intestine, liver,and lungs. The kidneys filter blood and form urine. They are part of the urinary system, which also includes the ureters, bladder, and urethra.
Brittany wants to use a model to study soil erosion on hills. She is told that farmers can prevent soil erosion by plowing so that their furrows run along hills instead of up or down hills. She fills a pan with dirt, packs the dirt firmly, then shapes it into parallel furrows. What should Brittany do with her pan of dirt next in order to study soil erosion? A. Prop up one end of it to make a slope and carefully pour water over it B. Shake the pan rapidly back and forth C. Set it outside and check on it every day D. Fill the pan with water, then tilt it until all the water runs out
Answer:
A. Prop up one end of it to make a slope and carefully pour water over it.
Explanation:
Soil erosion leads to infertility of the land due to the loss of the top soil which contains soil nutrients.This leads to low production by the farmers and also reduces the crops quality and yields.Plowing the land up or down hills increases the rate of erosion for channels carrying runoff water flow are created easily leading to carrying of the top soil fro the top of the hill to the bottom.When the land furrows run along hills, water landing on top of the hill cannot form water run ways down the hill and this helps reduce erosion.
***HELP ASAP***A group of land plants performs photosynthesis, has specialized tissues and a cuticle, but does not have seeds. Which hazard of living on land would this group of plants likely struggle with the most?
A)water loss through leaves
B)young plant death due to lack of water
C)transporting water
D)using the Sun’s energy to make food
The answer would have to be B
The hazard of living on land would this group of plants likely struggle with the most is young plant death due to lack of water.
What are seedless plants?Seedless plants are those who does not contain seeds and do not produce flowers. Examples are ferns, horsetails, mosses, and liverworts.
These plants have roots, leaves and stem but no seeds, they have specialized tissue that conduct water and food.
Thus, the correct option is B) young plant death due to lack of water.
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Help please I need this as soon as possible
I would say it is a telescope because it is the only round object.
It’s a telescope , I chose that answer before
31. Small openings in the epidermis that allow carbon dioxide, water and oxygen to diffuse into and out of the leaf are known as
A. Stomata
B. Phloem
C. Xylem
D. Meristems
32. Vascular tissue that conducts water and minerals from the roots to all parts of the plant is known as
A. Stomata
B. Phloem
C. Xylem
D. Meristems
33. The regions of unspecialized cells that undergo mitosis to create new cells are called
A. Stomata
B. Phloem
C. Xylem
D. Meristems
31:stomata 32:xylem 33:meristems
Answer:
1. Stomata: The small openings that allows the movement of gases from the leaves to the outer environment and from the environment to the plant body is known as stomata.
They consists of mesophyll cells that builds the pressure inside the cell because of which the gaseous exchange takes place.
2. Xylem: The water and nutrients from the soil is conducted to the plant body for the production of food by the help of the process known as photosynthesis.
This process is important for the plants and other organisms in order to survive and get energy.
3. Meristems: This is the region of the plant that keeps on dividing. These cells give rise to various organs of the plant body.
This is found in the growth regions. These cells are found in the roots of the plants.
Which type of sensory receptor is responsible for smell and taste?
Chemoreceptors are responsible for smell and taste
Watson and Crick discovered that DNA is __________. A. the genetic information B. very small C. a double helix D. a treatment for cancer
Answer:
C. a double helix
Explanation:
Answer:
double helix
Explanation:
BEST ANSWER GETS BRAINLIEST!!!
A scientist has done his background research and has designed an experiment to test a popular scientific theory. Which of the following should he do next?
Design the report
Know and follow the steps of the scientific method
Make tables and graphs of the data collected
Organize the data collected
Answer:
B
Explanation:B because you have to perform the experiment before making a report
I think it’s C make a tables and graphs of the data collected
A usable water source is one that can be used by humans for drinking or agriculture. Identify the water reservoir as usable or unusable based on their current state. HELP !!!! 25 points
Answer: Usable
Explanation: Im positive its usable but im not exactly sure if im supposed to answer, picture isnt too clear on my end...
Usable Source:
Freshwater lakesGroundwaterRiversUnusable Source:
OceansGlaciersWhat is water sources ?
The classification scheme is predicated on the idea that readily available water sources suitable for cultivation or consumption are usually considered useable.
So, Rivers, freshwater lakes, and groundwater are more likely to meet this requirement than oceans and glaciers, which are less suitable for direct human usage because of things like salinity and accessibility.
In a population of gerbils ,long hair is completely dominant over short hair .if 18percent of the population has short hair , calculate the percentage of the population that is expected to be heterozygous
Answer: 49%
Explanation:
* long hair = P
* shirt hair = q using the Hardy-Weinberg equation for genotypic frequencies
* p^2 + 2pq + q^2 =1
*first use the equation to solve for the known value 18% hh
.18 = q^2
Square root .18 = q
So q = .42
* plug this allelic frequency in to p+q = 1
Which will give you the frequency of dominant alleles
1 - .45 = p So P = .58
Then just plug the P and q values found into the portion of the equation for heterozygous offspring.
2(.58)(.42)
Which is .49 or 49%
The entire population should be 33% homozygous dominant 49% heterozygous and 18% homozygous recessive.
Answer:
49 percent
Explanation:
I got this question correct on the quiz.
What vessel branches off the aorta and brings blood into the kidneys
Answer:Renal artery
Explanation:
Photosynthesis releases energy that is immediately useable by the cell to do work.
True Or False
I think it’s False because cellular respiration releases
Suppose that a patient is diagnosed with a new disease caused by the buildup of waste material in the body’s cells. Which organelle is most likely malfunctioning in the patient’s cells?
Answer:
The correct option is LYSOSOMES.
Explanation:
The options attached to the question above are as follows:
A. Golgi apparatus.
B. Lysosomes.
C. Ribosomes.
D. Endoplasmic reticulum.
Lysosomes are membrane bound organelle in animal cells that are responsible for breaking down and recycling of biochemical substances. They take in, break down and digest waste products and dead cell organelles. Due to the functions that they perform, they are sometimes refers to as the cell garbage disposal. Any malfunctioning of the lysosomes will lead to build up of waste materials in the body cells; this is because the lysosomes' ability to take up and destroy the waste materials would have been impaired.
Answer:
Answer lysosomes
Explanation:
Bacteriophages are viruses that infect bacteria. In an experiment, bacteriophages were labeled with either radioactive phosphorus or radioactive sulfur. The labeled bacteriophages were incubated with bacteria for a brief amount of time and then removed. The infected bacteria cells were found to contain significant amounts of radioactive phosphorus but not radioactive sulfur. Based on the results of the experiment, which of the following types of molecules did the bacteriophages most likely inject into the bacteria cells? (A) Simple carbohydrate (B) Amino acid (C) DNA (D) Polypeptide Unauthorized copying or reuse of any part of this page is illegal. GO ON TO THE NEXT PAGE. -9
Answer:
(C) DNA
Explanation:
This experiment shows that when bacteriophage infects bacteria, it only inserts its DNA (radioactive phosphorus is incorporated only in nucleic acid, while radioactive sulfur is incorporated only in proteins). Proteins with incorporated sulfur are located within the capsid of bacteriophage, which stays outside the bacterial cell.
What is the oldest form of biotechnology?
A.) selective breeding
B.) hybridization
C.) cloning
D.) recombinant DNA
Answer:
Selective breeding
Explanation:
Hope this helps!
Answer:
A.) selective breeding
Explanation:
Selective breeding is the process of crossing the selected individuals to obtain progeny having desired features. It is the oldest form of biotechnology and relies on presence of desired genetic features in the wild population. Selective breeding was extensively used by farmers and animal breeders to produce the crops and animals progeny of beneficial traits.
How many different types of gametes can be produced by a plant with genotype aabbccddeeff?
Answer:
Only one type of gamete
Explanation:
Since the given genotype is homozygous recessive for all loci, all formed gamets will be the same (all of them will have one recessive allele). This means that only one type of gamete can be produced. That gamete is abcdef.
Which of the following is a way that science has benefited society? a. medical advances b. new energy resources c. technological advances d. all of the above Please select the best answer from the choices provided
Answer: . all of the above
Explanation:
Science has benefited the society by contributing to wide areas of scientific fields like their contribution in medical science, invention of alternative sources of energy, and technological advances.
Medical science: Scientists have conducted many research in order to determine the cause of diseases and their possible diagnostic treatments.
New energy: Scientists have found out energy harnessing technology from renewable resources like water, sunlight and biomass which can meet the energy requirement of human society when conventional resources will not be available.
Technological advances: Scientists have contributed to the development of diversity of machinery which can reduce the human labor.
Answer:
The answer is d all of the above
Explanation:
In the film Avengers: Infinity War the main villain, Thanos, wipes out half of the life in the universe. His rational for doing this is that without some sort of intervention ALL life would cease to exist. And, furthermore, that those left behind after he destroys/unmakes will see a more prosperous and peaceful life. Was Thanos right/justified in his actions? Why or Why not?
Answer:
Explanation:
His conclusion is correct. We are overpopulated. Our planet cannot stand double the population it currently has. Waste for one thing is an unsolvable problem with 14 billion people on the planet. We are already in massive trouble with 7 billion.
But the moral principle involved is not correct. Laws have been set up that prevents us from killing each other off. Holocausts have solved nothing but that we are capable of mass murder. The population problem and all it's side effects have not been eradicated.
The Bible records God's attempt at doing what Thanos wanted to do. He saw immediately after the flood that was not the answer. Too many people is one thing. Murdering half is no answer that will work.
Answer:
Now that you say it that way, it sounds as if Thanos was trying to help. Though wiping out half of the population wasn't the very best solution, he had reasoning behind why he did this.
PLEASE HELP ASAP
#1: If a person inherits the A allele from his mother and the B allele from his father, what will his blood type be?
AB
O
B
A
#2:
Answer:
I think so it will be AB I think so
Fresh water is one of the most important natural resources on earth. Above is a chart that shows how water is used by a typical family. Below are four ways you can conserve water. Which would conserve the most water?
Can I see the chart? You can add an image of the chart by clicking the paperclip icon when asking your question.
Answer: B
Explanation: Stopping all the leaks in your house.
Allele frequency refers to the fraction of individuals with a particular version of a given gene. What effect does natural selection have on the allele frequency of a population? A. It causes the allele frequency to resemble that of a small number of individuals that became separated from the rest of the population. B. It increases the frequency of alleles that improve a species' survival in a particular environment. C. It causes random changes and the allele frequency of certain traits may increase or decrease. D. It greatly reduces the total population, which increases the effects of genetic drift on allele frequency.
Answer:
It increases the frequency of alleles that improve a species' survival in a particular environment.
Explanation:
Basically, good traits stick around, and Allele with these traits reproduce more, and Alleles without these good traits don't reproduce as well.
Natural selection increases the frequency of alleles that improve a species' survival in a particular environment (Option B).
What is natural selection?Natural selection refers to the differential survival and reproduction of the fittest organisms in a population.
Natural selection can be considered the main mechanism for evolution to occur.Natural selection favors the presence of the more adapted genetic combinations (alleles) in the population.In conclusion, natural selection increases the frequency of alleles that improve a species' survival in a particular environment (Option B).
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Which kingdom was divided into two, changing the five-kingdom classification system to the six-kingdom classification system? A. Protista B. Monera C. Plantae D. Fungi
Answer:
the answer that i got is A. i think this is right, i am sorry if that is not the right answer and hope this helped
Monera was divided into two, changing the five-kingdom classification to the six-kingdom classification.
What is monera?Monera is a classification used to describe unicellular prokaryotic microbes(micro-organisms) which we call now as Archae and Bacteria. Prokaryotic organisms are single-celled organisms that don't have a true nucleus, and DNA is found in the cytoplasm of the cell.The term Monera is not used now in the scientific community to classify Bacteria and Archae. Monera was considered as one among the five Kingdoms used to distinguish living organisms.To learn more about six-kingdom refer to:
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Suppose you have a population of 150 butterflies, but a wildfire devastates the population and only 24 butterflies survive. What percent does the colony decrease by?
Answer:
The colony decrease by [tex]84[/tex]%
Explanation:
Given -
Total population of butterflies before devastation (P) [tex]= 150[/tex]
Total Population of butterflies that survived after the devastation [tex]= 24[/tex]
Total population of butterflies that did not survived [tex]= P-p[/tex]
Substituting the given values in above equation, we get-
Total population of butterflies that did not survived [tex]= 150 -24[/tex]
Percentage by which the butterfly colony decreased [tex]= \frac{P-p}{P} * 100\\= \frac{150-24}{150} * 100\\= 84[/tex]%
Final answer:
The butterfly population decreased by 84% after the wildfire, calculated by dividing the decrease of 126 butterflies by the original population of 150 and then multiplying by 100.
Explanation:
To calculate the percent decrease in the butterfly population, we subtract the number of survivors from the original population to find the decrease in number, and then we divide that number by the original population and multiply by 100 to get the percentage. In this case, the original population was 150 butterflies and after the wildfire, only 24 survived.
The decrease in number is 150 - 24 = 126 butterflies. The percent decrease is (126 ÷ 150) × 100 = 84%. So, the butterfly population decreased by 84% after the wildfire.
What is the most common mental health diagnosis for youth in detention and correction facilities?
Depression is the most common mental health diagnosis
If a trait in a population is a result of natural selection, all BUT ONE of the following conditions must be met. That is :
A. The trait is heritable
B. The trait is functional
C. The trait increases fitness
D. The trait is the result of mutation
d is the answer i think
Answer:
D
Explanation:
mutation would not be met because traits are hertable and they do increase fitness depending on which trait you have but they are also functional and they do on mutate they are pass on
Which describes farsightedness? Check all that apply.
Distant objects are blurry. Nearby objects are blurry.
Objects appear larger when wearing corrective glasses.
Objects appear smaller when wearing corrective glasses.
Convex lenses can correct it.
Concave lenses can correct it.
Answer:
the answer is a
Explanation:
i am farsighted so i were glasses for this reason and hate it some times but they work
Answer:
Option B - Objects appear larger when wearing corrective glasses
Option D - Convex lenses can correct it
Explanation:
Farsightedness is a problem in which a person is able to view far away objects clearly but is unable to view nearby objects.
A convex lens is used to correct farsightedness. The focal point lie behind the retina of eyes as the distance between the retina and eyepiece is very small , thus to correct this convex lens is used which reduces the focal length.
A convex lens magnifies an object and make it larger than its normal size thus the nearby object which was not visible earlier is now easily visible.
Thus, both option B and D are correct.
Based on this information, do you still think lions and tigers are separate species? (all responses will be marked correct.)
The cat species are extremely hard to tell apart as they all have pretty much the same anatomical structure, with the size usually being what differs them most easily. The lion and the tiger are no exceptions. Both species share pretty much the same anatomy, their size is similar, their genetics are almost identical, their behavior is largely the same. This can be very confusing as it seems like it is one species we are talking about, not two separate ones. The only obvious difference between the tiger and the lion is their fur. The tigers have orange base with vertical black stripes, while the lions are dark yellowish, with the males having a mane as well. The easiest way to check if its two different species in question is to see if they can produce healthy offspring. This is where we can see that it is different species we are talking about. While the lion and the tiger are able to produce offspring, the offspring is abnormally marge, much more than any of the parents. But what is more important is that the offspring is sterile, and very often comes with serious deficiencies, thus providing us with proof that it is two separate species.
A crater in mexico's yucatan peninsula may be the result of an impact that brought about the extinction of numerous species at the end of the ________ period.
Answer:
Cretaceous
Explanation:
From what has been examined so far, there are evidence that at the end of the Cretaceous period a very large asteroid or comet stuck the Earth. The impact was where modern day Yucatan is located, and it released such an enormous energy that it managed to change the face of the Earth. The explosion itself managed to kill off pretty much everything nearby, but there was also a very hot wave that circled the whole planet. Enormous amounts of dust and ashes were released into the atmosphere that blocked the Sun, and the volcanoes all over the globe were triggered. This caused major climate and environmental changes, leading to a mass extinction, with the most noticeable victims being the dinosaurs.
Nuclear energy is considered to be one of the most environmentally friendly sources of energy. Compared to traditional sources of energy such as the combustion of fossil fuels, it produces fewer greenhouse gas emissions during the production of electricity. What is another advantage of using nuclear energy?
It produces more energy faster than these other sources of energy
Nuclear energy is highly efficient and provides a steady and reliable source of power, which contributes to the stability of power grids. The infrastructure for nuclear energy is already well-established. In the future, nuclear fusion could offer an even safer and cleaner source of energy.
Explanation:Another advantage of using nuclear energy is its high energy density compared to traditional sources of energy. This means that nuclear energy is highly efficient, as it can produce a significant amount of energy from a relatively small amount of fuel. Additionally, nuclear energy provides a steady and reliable source of power, unaffected by changes in weather or raw material prices, thus contributing to the stability of power grids.
Furthermore, the techonology and infrastructure for nuclear energy are already well-established, unlike for some renewable energies where extensive development and scaling are still needed. For example, nuclear fission power plants are already present across the world and provide a significant quantity of the world's electricity.
Future technologies such as nuclear fusion can also provide an even greater reduction in greenhouse gas emissions while utilizing more abundant and less hazardous fuels than nuclear fission. Scientists believe that fusion reactors are nearly here, representing a safer, cleaner and more abundant potential source of energy.
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The majority of the cell membrane is composed of what type of lipids?
Answer:
The majority of the cell membrane is composed of PHOSPHOLIPIDS.
Explanation:
Phospholipids are a type of lipid that is found in the cell membrane of cells. This type of lipid are a good fit for cell membrane because they have the capacity to form bi layers. The lipids are divided into tail and head regions; the head is hydrophilic in nature while the tail is hydrophobic in nature. The hyrophilic head is made up of phosphate group while the hydrophobic tail is made up of fatty acid molecules.
The embryos of a fish, chicken and rabbit all contain a tail and pharyngeal pouches at some point during their early development. Although the fetus of all these species looks different from one another, the similiarity between these organisms during their embryological development suggests an evolutionary relationship among all _________________________ species. A) avian B) invertebrate C) mammalian D) vertebrate
Answer:
The answer is vertebrate.
Explanation:
Vertebrates are those animals that have a central spinal cord. Fish, Chicken and rabbit can be classified as vertebrates because they all have a spinal cord. The vertebrate is a big term that is further divided into different classes for example Fish, amphibians, mammals, avian, and reptiles,
Answer:
The answer is D)Vertebrate
Explanation: