How much of the earth is covered by oceans? how much is covered by land? name the three oceanic zones and the three land zones.

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

What controls activities within a eukaryotic cell?