Rainfall in arid deserts a) creates seasonal rivers and lakes b) often evaporates before it hits the ground c) penetrates down to shrubs’ deep root structures d) falls mostly as snow in winter

How is an environment able to support different varieties of organisms?

Amylase is an enzyme found in the human digestive system. why do you think it was important to keep the enzyme temperature about 37 degrees celsius (98.6 degrees f)? describe what might happened the temperature decreased by 10 degrees celsius.

Hedgerows have created a new ecosystem within britain’s a. farms b. cities c. forests d. industrial areas