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Habitat and niche are synonyms that both describe where an animal lives.

What is said to occur when one organism obtains nutrition from another organism by living on or in the other organism?

If a forest burns down so that very little vegetation is left but plenty of soil is present, then ____ is likely to occur.

Species with a capacity for a high rate of population growth are called ____.

What would be the most effective way to try to prevent a society from becoming stuck in stage 2 of the demographic transition?

The relationship between impalas and oxpeckers, the birds that feed on their ticks, is an example of a mutualism, not commensalism, because ____.

To distinguish a prokaryotic cell from a eukaryotic cell, you could examine whether the cell ____.

Demographers estimate the human population in 2050 to be between 7.8 and 10.8 billion—a range of three billion. Why is the estimated range so wide?

If you take antibiotics often, you will increase the resistance of your bacteria because____.

The biggest reason that there was a major effort to restore American alligator populations is that ____.