A. A population with an annual growth rate of 3% doubles roughly every years. b. A population with an annual growth rate of 4% doubles roughly every years.
c. A population with an annual growth rate of 7% doubles roughly every years.

a.

And you can round 33.(3) to 33.

b.

and the final result is 25.

c.

And you can round 14.29 to 14.

Explanation:

First of all, you have to find how many times the growth rate would multiply to get closer to 100%. So if you multiply 3 times 33 you'll get 99. So, a population with an annual growth rate of 3% doubles roughly every 33 years.

This solution is just for annual growth rate that is one year long.

and after water is usually warmed by the sun the water temperature raises and then evaporates .