Cells in organisms need food, air, and waste removal. how are these needs met? a. each cell must specialize in all of these functions. b. organs and tissues perform these functions for the cells. c. cells share their waste with other cells. d. cells get their food from the air and sunlight around them.

What claim did thorne make? what evidence supported his claim?

How does a lytic infection differ from a lysogenic infection?

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism