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Tutor profile: Valeriay D.

Inactive
Valeriay D.
Master of Arts in Teaching Student, tutored for a few years in undergraduate
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Questions

Subject: Environmental Science

TutorMe
Question:

What is the importance of renewable energy?

Inactive
Valeriay D.
Answer:

Renewable energy such as wind and solar power greatly reduces the amount of pollution put into the environment. There are no greenhouse gas emissions from renewable resources. The use of renewable helps reduce the amount of nonrenewable energy the world consumes. Renewable energy will also help reduce the rate of global warming.

Subject: Biology

TutorMe
Question:

Describe the importance of a keystone species.

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Valeriay D.
Answer:

A keystone species is a species in which an ecosystem depends on. This being said if a keystone species is removed from an ecosystem the ecosystem and species in it will change. This can be seen in the Yellowstone National Park example, the wolf is our keystone species. When the wolves were hunted to extinction the park started seeing drastic change, the deer populations increased significantly and trees were being eaten and damaged by this. This was because the wolves acted as population control on the deer species, thus the increase in deer lead to the decrease in vegetation. After this was noticed by scientists, they reintroduced the wolves into the park and saw an immediate fix to their problem. Deer populations decreased and the vegetation increased.

Subject: Algebra

TutorMe
Question:

How do you solve a problem with two variables, x and y?

Inactive
Valeriay D.
Answer:

You take one of the equations and solve for the first variable, y. After you solve for y, you the plug this value into the other equation with as the y. You will then have only the variable x in the equation. Solve this equation for x, this is the value of x in the problem. Finally, you need to solve for y, plug in your numerical value of x into one of the equations and solve. You will now have your value for both y and x.

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