Question 1 of 32 How do the polar easterlies and the jet stream work together to affect the
weather in the United States?
A. The push surface ocean water into the Great Lakes.
B. They bring cold, polar winds southward.
O O
O C. They bring warm winds to the equator.
D. They bring weather from the West coast to the East coast.
SUBMIT

Animal bodies (and even plant bodies for that matter) are complex enough that life couldn't exist without enzymes. enzymes are usually large, complex biological catalysts that are expensive to make. enzymes speed up the rate of chemical reactions without being used up during the reaction (they can be reused many times). they are highly specific in the reactions they regulate. knowing what enzymes are and how they function, why does this explain why complex life forms could not exist if there were no enzymes.

As a small change in a person's dna can cause a genetic disorder

Explain how scientists use geologic time to determine the age of landforms.