Why do some birds have bright colors while others look more camouflaged

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

Describe how ecosystems recover from a disturbance

Describe two farming practices that can reduce erosion