Acid rain changes the ph of soil, killing some trees. this is an example of
a. habitat fragmentation
c. habitat degradation
b. global warming problems
d. exotic species

Acid rain changes the pH of soil, killing some trees. This is an example of global warming prolems. The answer is letter B. Nitrogen and sulfur oxides are gaseous pollutants from transport vehicles and industrial sectors. When these are released in the atmosphere and collected there, it will form an acid rain.

answer: the figure is attached herewith.

step-by-step explanation:   we are given to sketch a unit circle and label the terminal points corresponding to

in the attached figure, we have drawn a unit circle, with centre at o(0,0) and radius 1 unit. we have labelled the points a, b, c, d and e corresponding to the angles below

∠aox = 60°,

∠box = 120°,

∠cox = 180°,

∠dox = 240°,

∠eox = 300°.

and the coordinates are a(0.5,1), b(-0.5,1), c(-1,0), d(-0.5,-1) and e(0.5,-1).

thus, the answer is complete.