You track aquatic coastal levels of nitrogen and phosphorus at high latitudes and notice a sharp increase in the winter and then again in the spring. What do you expect the effect of these nutrient increases will be on the plankton populations?
A) sharp spikes in population levels at essentially the same time (or, in phase) with the spikes in nutrients
B) sharp spikes in population levels some time after (or, out of phase) with the spikes in nutrients
C) a sharp spike in population levels in the spring, when light levels are higher; not much of a response in winter
D) no effect of the changes in nutrient concentration on the plankton populations in either winter or spring
Correct Answer:
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