explain how the ability to describe the pattern of the ice age over the past million years helps us assess a normal variation in Earth's atmosphere

Why reason best illustrates why hershey and chase chose to use viruses in their experiment?

Diagram of the evolution of land plants?

The blue particles in this image are able to cross the cell membrane through simple diffusion. how will they be transported? outside the cell inside the cell o a. the substances will move directly across the membrane from outside the cell to inside the cell. b. the substances will move through channels in the membrane proteins from outside the cell to inside the cell. o c. the substances will move through channels in the membrane proteins from inside the cell to outside the cell. o d. the substances will move directly across the membrane from inside the cell to outside the cell.