Humans cut down forests so that they can build homes, factories, shops etc.
This impacts wildlife because it destroys their home.
Answer:
A.when it reaches the top of its flight
Explanation:
This theory is base on gravitational potential energy which state that potential energy in an object increases as weight and height increases.
the amount of potential energy stored by an object depend s on the mass and height.
Answer:

Explanation:
To differentiate: 
Solution:
Use product rule:
and the following formulae:

![(10\,sinx\,\,cos x)'=10[(sinx)'cosx+(sinx)(cosx)']\\\\=10[cosx\,cosx-sinx\,sinx]\\\\=10[cos^2x-sin^2x]](https://tex.z-dn.net/?f=%2810%5C%2Csinx%5C%2C%5C%2Ccos%20x%29%27%3D10%5B%28sinx%29%27cosx%2B%28sinx%29%28cosx%29%27%5D%5C%5C%5C%5C%3D10%5Bcosx%5C%2Ccosx-sinx%5C%2Csinx%5D%5C%5C%5C%5C%3D10%5Bcos%5E2x-sin%5E2x%5D)
Use 

Usually 10 to 100 micrometers across (about 10 times the size of a prokaryotic cell)
Burning coal, vehicle emissions, waste disposal. hope this helped