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For most groups of animals, population density [1] as body size increases. Birds tend to have [2] population densities than other animals of similar body size.

Match the ecologist with their concept of an organism’s niche

Mycorrhizal fungi acquire __________ from their plant partners.

Based on this species rarefaction curve, which stream has the highest number of rare species?

Conspicuous warning patterns or colors that advertise a threat to predators are called 

Pine communities are eventually replaced by oak-hickory communities after about 150 years of old field succession on the Piedmont Plateau of North Carolina because

In the Piedmont of North Carolina, as plant diversity increases through secondary succession, bird diversity

The Shannon-Weiner index measures

Which ecosystem has higher species richness? [rich] Which ecosystem has higher species evenness? [even]

Martinsen, Driebe, and Whitham provided evidence for __________ with beaver consumption of cottonwoods resulting in higher densities of herbivorous beetles.