areas with hypoxia are known as __ zones

Answer:

A two part name with the genus and species name.

Explanation:

the first part is the genus that it belongs to, the second half is the species :) cheers.

Answer:

A two part name with the genus and species name.

Explanation:

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Answer:

A class system is a more smooth system, caste is more of a system that changes consistently.

Explanation:

"Class system is typically more fluid than the caste system or the other types of stratification and the boundaries between classes are never clear-cut. Caste system is static whereas the class system is dynamic. ... In the caste system, individual mobility from one caste to another is impossible."

A class system is somewhat open and allows for social mobility based on individual accomplishments and social factors, while a caste system is a closed system where social standing is determined by birth and allows for little to no change in social position.

A class system is a way of stratifying society where people's positions are based on both social factors and individual accomplishments. This system is somewhat open and allows for vertical movement or social mobility based on factors like wealth, income, education, and occupation. A person in a class system, unlike in a caste system, can improve their position through personal choices and opportunities.

On the other hand, a caste system is a closed stratification system where social standing is determined by ascribed status or birth, meaning it allows little to no change in social position. This system regulates all aspects of an individual's life including occupations, housing, and even marriage partners. This system is entrenched in society, and individual interests and capabilities don't provide opportunities for improving their social standing.

The Hindu caste system in India, for example, is heavily based on religious beliefs about karma and reincarnation. Although caste-based discrimination is now illegal in India, the system is still deeply embedded, especially in rural areas. Today, India's cities and corporations offer more opportunities for career choices and merit-based hiring, gradually shifting societal expectations tied to the caste system.

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Symplastic Pathway is the route by which water is transferred from cell to cell in the root section.

Option C                                           

Explanation:

This is cellular path that takes the water from one cell to other cell using the connections which is inter cellular path relationship. These intercellular connections are called as the plasmodesmata. plasmodesmata are the membrane connections between the adjacent cells. Whenever the water molecules are crossing through the cortex and it then tends to cross the endodermis. Endodermis is the internal structure of the plant where the water molecules get diffuses freely.                        

Answer:

The answer is A

Explanation:

Meteorite dating and lunar rocks are being used by planetary geologists in order to determine that the age of the solar system which is 4.6 billion years old. These meteorites are being tested in order to determine their span of existence

Answer:

Option (A)

The meteorites are the rocks from the outer space, that must have entered the earth's atmosphere in the geological past, causing a mass extinction event or asteroidal impacts. It may also have formed on earth during the time of the formation of earth. These rocks are very important to the planetary scientists as it helped in estimating the approximate age of the solar system. By using the radioactive dating method, it has been found that the minimum age of our solar system is approximate 4.6 billion years old. The composition of these meteorite and rocks are also studied and it was demarcated that they have originated from the asteroid belt that is present between the planets Mars and Jupiter.

Thus, the correct answer is option (A).

Answer:

C. Most people will die from negative health effects associated with stroke as indoor dirty air builds up.

Explanation:

C is correct option because it shows the highest proportion of people's death caused by stroke. On the other options are not correct due to the following reasons:

A is incorrect because it says that people have a lower risk of dying from COPD. On the other hand, the graph shows that this is 3rd most abundant cause of deaths.

B is incorrect because deaths due to lung cancer are the lowest according to the graphical illustration.

D is incorrect because the proportion of developing acute lower respiratory infection and ischemic heart disease are not the same. Deaths due to ischemic heart disease are higher than the acute lower respiratory infection.

Answer:

C is the answer

Explanation:

Hope it helps

Answer:

Boxwood shrubs are slow-growing plants with dark green glossy leaves. Some varieties have variegated leaves. Leaf shape depends on the variety; some are round while others are elliptical. They provide thick cover because the foliage begins close to the ground and is dense enough to block light.

Explanation:

English boxwoods are adaptive shrubs with ornamental features that can tolerate drought and poor soil. They have shallow root systems but can be vulnerable to diseases affecting the top of the shrub, requiring pruning of dead branches and sometimes removal if diseased. Other resilient ornamental shrubs can be used as replacements.

Boxwood shrubs can be found in a range of sizes and have a variety of adaptive features to survive in different environments. For example, they possess shallow, extensive root systems which allow them to thrive even in drought and poor soil conditions.

Problems with English boxwood can arise, often with severe damage to the top of the shrub appearing in the spring. It's recommended to prune out dead branches but to wait until June to confirm that the branches are indeed dead. In cases where disease is suspected, affected branches should be pruned out and samples should be submitted for laboratory analysis. Unfortunately, there are currently no effective disease management tactics, so removal of diseased boxwood may be necessary.

Answer:

I Think the answer is option "C"

Explanation:

Some unicellular green algae, notably Chlorella, live within the cells of animals, imparting a green color to some sponges, hydras, and flatworms. The plant kingdom probably evolved from a green alga.

According to the information, the probability of the baby that will have brown eyes is found to be 75%.

The reference to having brown eyes is determined by the fact that Eye color is directly related to the amount of melanin in the front layers of the iris.

People with brown eyes have a large amount of melanin in the iris, while people with blue eyes have much less of this pigment. A particular region on chromosome 15 plays a major role in eye color.

According to the context of this question, brown eyes (B) are dominant over blue eyes (b). Due to this, the genotype of the father is Bb while the genotype of the mother is bb. When they are crossed, they produce offspring with the genotypes Bb, Bb, Bb, and bb. This means that 75% of the offspring possess brown eyes.

Therefore, according to the information, the probability of the baby that will have brown eyes is found to be 75%.

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A, bacterial conjugation

Explanation:

I think it's this because in step 4, the things under the oval-ish circle looks like bacteria

1. Seaweeds, also known as macroalgae, comprise a diverse group of organisms representing various growth forms.

2. Seaweed comes in 3 colors green, brown, and red ( but colors within these groups vary)

3.  seaweeds lack the complex reproductive structure found in sea grass and land plants

4. Most seaweed attaches to hard surfaces such as rocks, shells or other algae, using a specialized basal structure called a holdfast; however, a few seaweed species survive over mud or sandy bottoms.

5. Seaweed is autotrophic, which means it produces its own food; using sunlight, macroalgae convert carbon dioxide and water into oxygen and sugar (photosynthesis).

I hope this helps you.

Seaweeds are multicellular organisms that can be green, red, or brown depending on their photosynthetic pigments. They lack true tissues or organs found in land plants and instead have leaf-like blades, stalks, and structures called holdfasts for attachment. Seaweeds are capable of photosynthesis and can be found in diverse habitats.

Seaweeds, also known as algae, carry distinct traits that differentiate them from terrestrial plants. Here are five characteristics:

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Mitosis and meiosis are similar in that they are both forms of cellular reproduction, and they both, consequently, produce daughter cells. Both processes also use the same four steps: prophase, metaphase, anaphase and telophase.

Answer:

Both the process of mitosis and meiosis are types of  cell division which occur in different types of cell in body but they posses some similarities like:

1. Both types of process follow the same process like DNA replication and condensation, chromosomal segregation, spindle formation.

2. Same mechanism for segregation of chromosomes like microtubules, centrosomes and motor proteins.

3. Both have same stages like interphase, prophase, metaphase, anaphase and telophase.

Horseshoe crab is an example of living fossil because there are fossil extinct of ancestors of horseshoe crabs, and the species still alive today. Horseshoe crab has been around for so long; it has survived mass extinction and it is still around.  

Horseshoe crab is considered living fossils because they have existed unchanged for about 445 million years. They are usually not crab; they are not closely related to lobsters or crab. Horseshoe crab is very closely related to spiders and other arachnids.

Generally, there are four species of horseshoe crab that is living today but one out of the species, called Limulus polyphemus can be found in North America. It is found near the Atlantic and gulf coast: from Maine to Mexico.

Horseshoe crab looks is almost the same with their ancient relatives despite the fact that they have been around for so long.  Their body structure is tank-like, which is made of:

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KEYWORDS:

Answer:

A.

Explanation:

There are fossils of extinct ancestors of horseshoe crabs, and the species is still alive today.

Answer:

I would say the best answer for this question would be A.

Explanation:

I chose this answer because factually, it does check out.  Say, for example there is a clinical trial for a drug to treat a specific disease.  

I can rule out B because obviously these doctors would not purposely infect the volunteer with this disease just to take a shot at curing them.  

I ruled out C because if we were using this trial drug on a completely healthy person... how would we know that the drug can help/cure the disease in mind if the person never had the disease in the first place.  C is simply absurd.  

And finally, D is much like B and so I can rule it out as well for the same reason.  

Answer: patients volunteer because they have a specific disease

Explanation:

Answer:

The direction of motion is changing, so the car is accelerating. By Newton's second law, an unbalanced force must be acting on the car if it is accelerating.

Positive, since it is a sustainable plan to use a renewable resource.

The local lumber business, with this move, is doing good both, to the business itself, and to the environment. Since the amount of trees that will be cut, is immediately replaced with saplings that are taken care of, the lumber business is creating a sustainable business for the future, and also it is creating a renewable resource. The environment will also benefit from this, because the lumber business will only use certain amount of wooded area because it will have new wood constantly on the same area it is using, thus they will not have the need to spread out on a larger area and destroy the environment.

The new strategy's impact on the environment is less damaging and more sustainable than clear-cutting. It aims to generate economic output whilst minimising environmental damage by using methods like selective logging and efficient farming.

Compared to the old method of clear-cutting, the new strategy's potential impact on the environment can best be described as more sustainable and less damaging. Clear-cutting or total deforestation, historically used by early settlers in places like New England, would involve removing old growth trees entirely which results in serious environmental degradation such as habitat loss, reduced biodiversity, and soil erosion.

On the contrary, new methods aim to achieve economical output (for example, growing corn in Sherwood's forest) without excessively harming environments. These strategies might include selective logging, preserving certain habitats, and using more efficient farming methods that minimize environmental degradation. Therefore, the new strategy is less destructive and more considerate of the environment than clear-cutting.

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I think that the answer to this is B-0.2s

Final answer:

Both Lamarck and Darwin attempted to explain the phenomenon of evolution by addressing 'What causes populations of organisms to change over time?' Darwin's theory of natural selection focused on heritable variations, while Lamarck's less accepted theory suggested inheritance of acquired traits.

Explanation:

The question both Lamarck and Darwin sought to answer with their theories of evolution is B: What causes populations of organisms to change over time?

Lamarck and Darwin were pioneering scientists in the field of biology who proposed different mechanisms to explain evolution, although Darwin's theory of natural selection is the one that has withstood scientific scrutiny and is widely accepted today. Darwin's theory proposes that populations evolve over time due to heritable variations that confer a survival or reproductive advantage in a given environment. These advantageous traits tend to become more common within the population across generations, leading to evolution. Conversely, Lamarck's theory, which is less accepted in the scientific community, suggested that traits acquired during an organism's lifetime could be passed on to its offspring.

It is important to note that while Darwin knew about heritable variations, he did not know about Mendel's laws of genetics and thus lacked the complete understanding of genetic inheritance which we have today. It was only after the rediscovery of Mendel's work that the modern synthesis of evolution occurred, integrating the principles of genetics with natural selection.

I would say

a. biological pest control

biological pest control is when  other plants or animals are used to control pests. There are no chemicals used only the natural roles of the environment.

Hope this helped!

Answer: a. biological pest control

Explanation:

Biological pest control is the process of controlling the colonization of disease causing agent by a biological agent like insect, animal, microbe or other living being.

According to the given situation the nematodes are biological control agent which controls the growth of mole crickets. Therefore, biological pest control is the correct option.

Increased temperature environmental effect of burning fossil fuels and pesticides from farming.

Temperature is the degree of hotness or coldness of a body.

Higher temperatures are worsening and cause many types of disasters like storms, heat waves, floods, and droughts. A warmer climate form an atmosphere that can accumulate, retain, and drop more water. Increase in temperature leaf to global warming.

Therefore, increased temperature environmental effect of burning fossil fuels and pesticides from farming.

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Answer:

Answer is C.

Explanation:

Radish plants do not form nodules like bean roots. Although there are some similarities between radish and bean roots, there are also differences such as the size, thickness, and color of the roots.

Radish plants do not form nodules like bean roots do. Nodules are found on the roots of legume plants, such as beans and peas, and contain bacteria called Rhizobia that help fix atmospheric nitrogen into a usable form for the plant. Radishes, on the other hand, do not have this symbiotic relationship with nitrogen-fixing bacteria.

Despite the differences in nodules, there are some similarities between radish and bean roots. Both radish and bean roots have a primary root that grows vertically downward and numerous lateral roots that branch out horizontally. They also both have root hairs, which increase surface area for absorption of water and minerals from the soil.

However, there are also differences between radish and bean roots. For example, radish roots are typically shorter and thicker than bean roots. Radish roots also tend to be less fibrous compared to bean roots, which can be quite long and stringy. Additionally, radish roots are typically white or pink in color, while bean roots can range from white to brown.

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Yes, there may be a few nodules present on radish roots. Both radish and bean roots are taproots, meaning that they have a single, thick main root that goes deep into the soil. Radish roots are typically shorter and thicker than bean roots.

There are nodules present on radish roots.

However, they are less numerous and smaller than the nodules on bean roots.

Both radish and bean roots have a taproot system, meaning that they have a single, large root that grows deep into the ground.

Both radish and bean roots are fibrous, meaning that they have many fine, branching roots.

Both radish and bean roots have root hairs, which are microscopic extensions that help to absorb water and nutrients from the soil.

Both radish and bean roots are used by plants to store food and water.

Radish roots are typically shorter and wider than bean roots.

Radish roots are white or red in color, while bean roots are typically brown or black in color.

Radish roots are eaten as a root vegetable, while bean roots are not typically eaten.

Radish roots do not have the ability to fix nitrogen from the air, while bean roots do.

Size and shape: Radish roots are typically shorter and wider than bean roots.

This is because radish roots are adapted for storing food and water, while bean roots are adapted for absorbing water and nutrients from the soil.

Color: Radish roots are white or red in color, while bean roots are typically brown or black in color.

The color of radish roots is due to the presence of anthocyanins, which are pigments that also give other plants, such as blueberries and cranberries, their red and purple colors.

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Answer:

the answer is A

Explanation:

Answer:

A

Explanation:

The two most likely effects of red foxes going extinct in the Yellowstone National Park food web would be an increase in the gray wolf population and a decrease in biodiversity.

If red foxes were to go extinct in the food web of Yellowstone National Park, there would be two likely effects on the ecosystem:

1. Increased gray wolf population: Red foxes are natural predators of small mammals like rodents and rabbits, including snowshoe hares and red squirrels in this food web. Without red foxes, these primary consumers could potentially increase in number since their predator is no longer present. As a result, there would be more food available for the gray wolves, which are secondary consumers in this ecosystem. This could lead to an increase in the gray wolf population as they have a larger food supply.

2. Decreased biodiversity: Red foxes play a role in maintaining biodiversity within an ecosystem. They help regulate the populations of their prey, such as snowshoe hares and red squirrels, by keeping their numbers in check. Without the predation pressure from red foxes, the populations of these primary consumers could grow unchecked. This could have a negative impact on the overall balance of the ecosystem, potentially leading to a decrease in biodiversity. Other species in the food web may be affected as well, as the absence of red foxes could disrupt the natural interactions and relationships within the ecosystem.

Mammals,

Canids

Domestic Dogs, domestic cats, European badgers, foxes, wolves,

Fox, domestic dogs and cats, wolves have tail glands that help them identify individual animals.  

Explanation:

The violent gland or supracaudal tail gland is situated on the tail's upper surface. The tail gland consist of one hair per follicle which helps in recognizing the person from their own species. When you tend to compare the hair follicle in tail gland to numerous hair follicle it has only one hair follicle. The hair breaks off easily and it causes the area to become bald. The tail gland is developed more in the species which are solitary for example foxes.

Answer:

Phanerozoic Eon is divided into three eras on the basis of prevailing climatic conditions on earth and dominant life forms present during the time.

Explanation:

The Phanerozoic Eon is divided into three eras namely the Paleozoic, the Mesozoic, and the Cenozoic era. The basis for classification of the Phanerozoic eon into three eras are the prevailing climatic conditions on earth and dominant life forms present during the time. Changes in climatic conditions of earth altered the species composition and dominant life forms present in each era.

Answer:

The eons are defined as the longest portion of the geological time scale, which records all the major distinct events that have taken place in the past. It's unit time is a billion years.

This eon is divided into 3 eras, namely-

(1) Paleozoic Era

(2) Mesozoic Era

(3) Cenozoic era

These eras are distinctly divided on the basis of the first appearance and disappearance of life forms on earth, which has been studied and determined through the study of the fossil assemblages that have been obtained. In addition to this, they are also classified based on the climatic variation that has favored the growth and expansion of different life forms that have occurred on earth in the geological past.

Answer:

The microscopic image shown in the figure is a coccus.

Explanation:

Bacteria generally exists in different forms or shapes. Based on shape they are categorized as:

Cocci (coccus is singular) - spherical in shape

Bacilli (bacillus is singular) - rod shaped bacteria

Spirillum - twisted shaped bacteria

Nucleoid means nucleus like or you can say irregular shaped bacteria.

If a bacteria exists in many different shapes then we call it as pleomorphic.

The bacterial form shown in the image is Coccos.

Bacteria can present themselves in different ways, such as:

Bacillus: rod-shaped

Coccos: spherical shape

Spirillum: helical shape

Nucleoid: irregular shaped

So, the bacterial form shown in the image is Coccos.

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Answer:

About 540 to 490 million years ago

Explanation:

The Cambrian is the first and oldest division of the Paleozoic era on the geologic time scale. The other periods in the Paleozoic are the ordovician, silurian, devonian, carboniferous and permian. At the permian a mass extinction occured.

The cambrian is marked with the evolution of lot of life and it is typified by the presence and dominance of trilobites.

Answer:

d they do not produce a protein

Explanation:

Answer:

A

Explanation:

Answer:

Option A, It requires the destruction of embryos to use the stem cells in research.

Explanation:

In embryonic stem cell research, the stem cells are obtained from the blastula stage of embryo which causes its destruction. Embryo duting the blastula stage consists of two types of cells a) trophoblastic cell and b) inner cell mass. This inner cell mass contains the embryonic stem cell which is responsible for developing all the cells of the body and hence once this inner cell mass is destroyed no new cell is produced in the body and thus the embryo dies.

The Equator is the center of the earth, the closer you are the more sun you have

Your Answer is C

Answer:

C. equator  

Explanation:

The Equator is the center of the earth, the closer you are the more sun you have

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