The upper limit of an organism's distribution in the rocky intertidal is usually determined by:
A) grazing effect.
B) predation.
C) pH.
D) desiccation.
E) competition.

Question

Quizplus · Accepted Answer

The upper limit of an organism's distribution in the rocky intertidal is usually determined by desiccation, which refers to the state of extreme dryness. As the tide recedes, the organisms in the intertidal zone are exposed to air and sunlight, which can cause desiccation. Therefore, the upper limit of an organism's distribution is determined by its ability to withstand the dry conditions.

The Upper Limit of an Organism's Distribution in the Rocky