Compare the nitrogen, carbon, and oxygen cycles.

2. given that most biochemical (other than coal) rocks react with hydrochloric acid, what does that tell you about organisms?

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.

Describe the relationship and movement between temperature and density in a convection cell. make sure you identify the direction of travel