B. They decrease. As more we use the sources of nature, the less is left.
Answer:
D
Explanation:
This may seem difficult to answer at first, cuz A and even B sounds plausible, but the relative direction of where she's drawing the picture is not known. And we know that the sun does not rise and set in the same place everyday. So the best answer would be D
The answer should be A. Active transport
Answer:
a)species x is anaerobic, and species y is aerobic
Plankton.......................................
