Describe how the dna is checked to avoid errors during replication. enter your answer in the space provided.

The diagram shows the layers of earth. convection currents in which region influence the movement of tectonic plates

The function of the ciliary escalator is to

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