Two oval shaped tissues at the back of the throat that prevent infection by trapping pathogens that enter the nose and the mouth.

Most mammals during the Mesozoic were a. small and rodent-like c. small and reptile-like b. large and rodent-like d. large and reptile-like

Two-step process by which bone tissue is broken down and reformed

One lithospheric plate can slide below another at __. a. divergent boundary b. convergent plate boundary c. over-thrust plate boundary d. a fault line

Each cerebral hemisphere can be roughly divided into four lobes. which lobe processes auditory information?

The part of the cytoskeleton made from the protein actin is called a

What would happen if a keystone species is removed from an ecosystem

Which material will displace a volume of water? all of them cork and wax iron, lead, and aluminum none of them Which material will displace a volume of water less than its own volume?

Why is mitosis responible for for growth, repair, and maintence

Explain one way in which a hormone can prevent contraception

1) Which of the following explains why a bone in a bird's wing is homologous to a bone in a lizards leg? A) The bones in the two species provide for the same type of motion.