Author Question: If the biosphere is to function properly, its components must be ________. A) replaced from space ... (Read 104 times)

sheilaspns · **on:** Jul 13, 2018

If the biosphere is to function properly, its components must be ________.

A) replaced from space
B) replaced from the ocean
C) recycled
D) fully used up within biogeochemical cycles
E) arranged so that they don't become fixed

Question 2

In most organisms, ________ is the most plentiful substance making up their mass.

A) nitrogen
B) water
C) carbon dioxide
D) oxygen
E) solid material