How long can primary succession take to be completed?
a. ten to hundreds of years
b. hundreds to ten thousands of years
c. thousands to millions of years
d. hundreds to thousands of years

What happens whenever a net force acts on an object

What is the identity of the planets?

The greenhouse effect a. something that has occurred for millions of years b. an unnatural phenomenon caused by humans that maintains earths temperature range. c. the results of the differences in the angle of the suns rays d. an unnatural phenomenon that causes heat energy to be radiated back into the atmosphere