In natural selection, what is actually "selected?"

A) alleles are directly selected

B) genotypes are directly selected

C) phenotypes are directly selected

D) entire populations are directly selected

One reason that electric power plants do not send out electrical energy as a direct current is that direct current can not be transformed explain why

When does the cell have to use active transport? A. when the cell is low on energyB. when the cell is in a highly concentrated solutionC. to move molecules across the membrane quicklyD. to move molecules across the membrane against a gradient

What types of molecules are broken down to make atp? which are most often broken down to make atp?

Most of semen volume is composed of sperm. True or False

An individual muscle cell within each skeletal muscle is called a

Which factor causes the greatest increase in an area's flash flood risk?

A body weight that is 10 to 15 percent below the desired weight is

How should we properly understand human nature?

Which molecule would be the most affected by limited nitrogen

Where does the energy come from to make ATP at the cloroplast