Q: Answer the following question given this paragraph: Most aquatic organisms do not have to deal with extremes of temperature or moisture. Instead, their main limiting factors are the availability of sunlight and the concentration of dissolved oxygen and nutrients in the water. Q: Besides the concentration of dissolve oxygen and nutrients in the water, what other factor limits aquatic organisms? A:

OPTIONS:
-- rainfall;
-- temperature;
-- lake size;
-- availability of sunlight;
The answer is:
availability of sunlight