Q: Which landmark book on evolution via natural selection did charles darwin publish in 1859? Choices: - on the origin of mammals - on the ethnic of species - on various kinds of animals - on the origin of species A:
on the origin of species

Q: The cochlea is a shell-like structure that is full of fluid and lined with nerve cells called what? Choices: - sperm cells - red cells - brain cells - hair cells A:
hair cells

Q: Push or pull acting on an object is also called? Choices: - Gravity. - space - effort - force A:
force