Human impact can cause population as previous limits are removed.

growth

decline

both a and b

none of the above

prey on animals.

carnivores

herbivores

both a and b

all of the above

1. in what ways have non-native species been beneficial? 2. what are some of the hypotheses for the collapse of honeybee colonies? 3. distinguish between regional and functional extinction. 4. why is it difficult to measure background extinction rates? 5. what three factors are most important in causing extinction rates to climb?