Energy must be transformed in ecosystems because

a.

energy cannot be created or destroyed

b.

an organism’s energy must go somewhere

c.

an organism’s energy must come from somewhere

d.

all of the above

The vegetation that thrives in the tundra is limited to a. mosses, barley, wheat, and corn. b. coniferous trees. c. dwarf shrubs, mosses, lichen, potatoes, and beans. d. mosses, lichen, algae, and dwarf shrubs.

In which horizon of soil profile is prevent material usually found

Which two nations are doing the most to combat their environmental issues?