Why do hurricanes form only in the tropics? a. there is only enough atmospheric moisture in the tropics to form hurricanes. b. the coriolis force is only strong enough in the tropics to form hurricanes. c. ocean water temperatures are not high enough outside of the tropics. d. winds are not strong enough outside of the tropics.

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.

Aquaternary consumer species would be expected to have a smaller population than a secondary consumer species. select the best answer from the choices provided t f

Which of the following requires the use of energy and the of transport proteins to move a molecule across a cell membrane?