1. Why do you think that egg-laying rarely evolves from live-bearing? 2. Why do you think the brain is affected when the testes are surgically removed (termed castration)? 3. Compare the different...

1. Why do you think that egg-laying rarely evolves from live-bearing?

2. Why do you think the brain is affected when the testes are surgically removed (termed castration)?

3. Compare the different types of birth control.