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Anastaziya [24]
3 years ago
13

31. Elephants are not the most dominant species in African grasslands, yet they influence community structure. The grasslands co

ntain scattered woody plants, but they are kept in check by the uprooting activities of the elephants. If the elephants are taken away, the grasslands convert to forests or to shrublands. The newly growing forests support fewer species than the previous grasslands. Which of the following describes why elephants are the keystone species in this scenario? A) Elephants exhibit a disproportionate influence on the structure of the community relative to their abundance. B) Grazing animals depend upon the elephants to convert forests to grassland. C) Elephants prevent drought in African grasslands. D) Elephants are the biggest herbivore in this community. E) Elephants help other populations survive by keeping out many of the large African predators.
Biology
1 answer:
Hatshy [7]3 years ago
6 0

Answer:a. Elephants exhibit a disproportionate influence on the structure of the community relative to their abundance.

Explanation:

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The methodology used to discover the pattern of evolution among an assemblage of species is based on the assumption of descent w
Shtirlitz [24]

Answer:

<u>Option-(True):</u> The methodology used to discover the pattern of evolution among an assemblage of species is based on the assumption of descent with modification.

Explanation:

<u>Evolution and patterns of evolution:</u>

The phenomenon of evolution is very interesting as it can any two different species back to a common origin or ancestors. While the process of evolution does not occur in few years or centuries, as it takes millions of years for any specie to evolve from a less developed form of body or any system to a more complex or advance form.

Now, evolution occurs in many forms or patterns. As it species can originate from a single ancestor or descendant, while the evolution can occur inside the organism may occur in different patterns. These patterns are as follows:

  1. <u>Divergent Evolution:</u>The divergent evolution occurs when the species originated from a single ancestor or descendant results in different forms of organisms. As it brings diversity among the species belonging to same ancestors or origin. For example, the humans and apes.
  2. <u>Convergent Evolution: </u>The convergent evolution takes place inside the number of species when they are originated from the different species but they share the same medium or region to live in and share some of the similar resources between them. For example, The whales are mammals but they too live with the fish species inside the water.
  3. <u>Parallel Evolution:</u>When the evolved organisms or species are related to the different ancestors or descendants, as they share they do not share the same niche(way of life), as the species are unrelated to one another.

7 0
3 years ago
In humans and other multicelluar organisms, whic substance plays a central role as an energy source?
allsm [11]


would it be the sun?


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3 years ago
In the above diagram of a plant cell, what is the function of structure 3?
kramer

Explanation:

B.  serves as the control center of the cell and contains the cell's genetic information

All the genetic information within the eukaryotic cell is stored within the nucleus as helical DNA. This DNA is tightly wounucleuscarbohynd around histones as chromosomes. Chromosomes within the nucleus is unwound, unzipped and read by enzymes in a complex series of steps known as transcription. The message on DNA, called genes is copied by RNA polymerase, to form mRNA complementary sequence to that of the DNA strand. These are then translated into proteins in ribosomes.

Further Explanation:

A cell's structural components (i.e. their makeup) determine their function (what they do) . For instance, photosynthesizing cells in algae and plants have structures called chloroplasts. These contain chlorophyll, a specialized compound which facilitates the conversion of light energy to energy stored in carbohydrates. In specific cell types, collected proteins may function as a unit called an organelle. Some organelles are bound by membranes like those that make up the external structure of the cell, with varying compositions of phospholipids and proteins. These are advantageous, as they:

  • may increase metabolic reaction efficiency; they allow cells to concentrates smaller fractions of enzymes and solutes
  • separate proteins and molecules that me harm the cell by parceling them into membrane-bound organelles for example, proteaseas bound within lysosomes can break down many structural proteins

Learn more about cellular life at brainly.com/question/11259903

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6 0
3 years ago
Why is it not safe to touch electricity equipment with wet hand?
Sliva [168]

Answer:

We should not touch electrical appliances with wet hands because our body is a good conductor of electricity and since we may get electric shocks. ... Also one should avoid getting wet while touching electrical appliances because water is also a conductor not pure one though

Explanation:

4 0
3 years ago
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Describe the role of producers in a food web. Are producers the basis of all food webs? Justify your answer. please help me!!!
Thepotemich [5.8K]

Answer:

The producers play main role in the food chain and food web as well. These organism make food by the help of the process known as photosynthesis.

Only producers have the ability to make food by trapping sunlight. All the living source needs energy to survive.

The source of food is producers so living things cannot survive without food. So there producers are considered as the main component of food chains and food web.

hence, they play a very vital role in the environment.

6 0
3 years ago
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