4. Photographs A and B below show two different valleys. Photograph A
Photograph B
Which list best identifies the agent of erosion that primarily determined the shape of each valley?
A) photograph A-glacier, photograph B-river
B) photograph A-river, photograph B-glacier
C) both photographs-river
D) both photographs-glaciel

Which enzymes break down carbohydrates?

(6.02 mc)what affect do marine protected areas have on environmental quality? they increase environmental quality by preventing resource overuse. they increase environmental quality by adding new species. they decrease environmental quality by removing all human activity. they decrease environmental quality by adding recycling facilities.

What is the most common structure of volcanoes?