Answer the following question given this paragraph: Darwin finally published his theory of evolution by natural selection in 1859. He presented it in his book On the Origin of Species . The book is very detailed and includes a lot of evidence for the theory. Darwin's book changed science forever. The theory of evolution by natural selection became the unifying theory of all life science. 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

Answer the following question given this paragraph: The stirrup passes the amplified sound waves to the inner ear through the oval window (see Figure above ). When the oval window vibrates, it causes the cochlea to vibrate as well. The cochlea is a shell-like structure that is full of fluid and lined with nerve cells called hair cells. Each hair cell has tiny hair-like projections, as you can see in Figure below . When the cochlea vibrates, it causes waves in the fluid inside. The waves bend the "hairs" on the hair cells, and this triggers electrical impulses. The electrical impulses travel to the brain through nerves. Only after the nerve impulses reach the brain do we hear the sound. 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

Answer the following question given this paragraph: Force is defined as a push or pull acting on an object. There are several fundamental forces in the universe, including the force of gravity, electromagnetic force, and weak and strong nuclear forces. When it comes to the motion of everyday objects, however, the forces of interest include mainly gravity, friction, and applied force. Applied force is force that a person or thing applies to an object. Q: Push or pull acting on an object is also called? Choices: - Gravity. - space - effort - force A:
force