What is the term used to describe the increase in the number of individuals in a population? population growth
species count
population density
carrying capacity

Which class of organic compounds makes up the channels and pumps that move materials from one side of the cell membrane to the other? a.) carbohydrates b.) lipids c.) proteins d.) nucleic acids

In what for do plants utilize nitrogen? why do they need nitrogen?

Approximately what portion of the foods that we eat have been genetically modified in some way? a.fewer than 10% b.about 50% c.nearly 100%