Which structure is directly involved in gas exchange?

Mineral rich water heated by newly found oceanic crust escapes through cracks in the ocean floor called

Which of the following may one conclude from a map that shows the average ph value of rainfall in the u.s.? acid rain is a more serious problem on the east coast. acid rain falls equivalently across the continental u.s. there are more factories on the west coast. the midwest has fewer forests than the rest of the u.s.

Which of the following terms describes all of the non-living components of an ecosystem