b) 750
c) 1650
d) 800
Why is it important to humans?
Answer:
The ozone layer absorbs most of the Sun's ultraviolet radiation in the Earth's stratosphere.
Explanation:
It is important to humans because it protects us from getting sun burnt and from our body receiving too much radiation.
Answer:
it protects us from radiation from the sun
B. None of these describe natural selection
C. Organisms survive with random chance only
D. Organisms with favorable traits best fit for the environment survive and reproduce to pass on those traits