D I believe but im not sure
Answer:
it should be C. If not, try D.
Explanation:
Physical weathering of rock by water happens when waters affects the shape of a rock in any sort of form, such as breaking it into small pieces, breaking off a large chunk or etc.
The correct answer is A. More oxygen is produced during photosynthesis
than the plant needs for cellular respiration, so the plant needs to release the extra oxygen.
BB x BB = BB no matter what.
So its %100 black.