Lisa breeds snakes. She bred a solid brown male python with a tan female python whose body was covered with a black diamond pattern. Upon hatching, all of the baby pythons were brown with a faint diamond pattern.

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?