in a forest ecosystem, which is an abiotic factor? (A) the amount of rainfall (B) the size of the deer (C) the type of trees (D) the number of birds​

(A) The amount of rainfall

Explanation:

Abiotic means not living, biotic means living. Rainfall is not a livig organism, while the other options are.

b.

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.