Question on AP Biology?????

Question

Oligotrophic lakes are nutrient poor because they

a. have little surface area relative to their depth.

b. are freshwater biomes that do not contain enough salt.

c. have too much surface area relative to their depth.

d. are marine biomes that contain too much salt.

Answer 1

An oligotrophic lake is a lake with low primary productivity, the result of low nutrient content. These lakes have low algal production, and consequently, often have very clear waters, with high drinking-water quality. The bottom waters of such lakes typically have ample oxygen; thus, such lakes often support many fish species, like lake trout, which require cold, well-oxygenated waters.

Best answer = B).

Answer 2

this is all i know about the question... i hope you can read it and pick the best answers that suits what you know...

Standing bodies of fresh water are often divided into categories that reflect levels of biological production.

Oligotrophic lakes are those that are unproductive: net primary production is only between 50 and 100 milligrams of carbon per square metre per day, nutrients are in poor supply, and secondary production is depressed.

I hope it helps...