Some types of aquatic frogs spend the winter hibernating, buried in the mud at the bottom of lakes and ponds. which characteristic of life does that behavior represent? a)metabolism, b)response, c)growth and development, d)heredity.

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?