When members of a species become separated by geography and lose the ability to interbreed, how would scientists classify them?

A. subpopulation

B. two separate species

C. one species

D. subspecies

Why are common names not a good reference to a species

A solution that is a 4 on th e pH scale is a

Which of these situations is the main threat to the survival of polar bears? A. Polar bears pose a danger to humans B. Polar bear pelts are in high global demand C. Climate change is melting the ice in polar bears' hunting territory D.

The rate at which materials enter and leave thru the cell membrane depends on the cells • A. volume • B. weight • C. mass • D. surface area

All of the following are respiratory enzyme complexes involved in the electron transport chain except? a. NADH dehydrogenase b. NADPH dehydrogenase c. Cytochrome C reductase d. Cytochrome C oxidase

13. What is another name for rod shaped bacteria? A. bacilli B. cocci C. spirilla

What process takes place in the large intestine?

Which cell structures are found in plant cells, but not in animal cells?

Even though Lebron is a great basketball player, he only won 1 championship ring. Not winning is making him depressed and therefore makes him want to eat a lot of lipids.

When pushing a child on a swing, you must give them a push periodically to keep them moving. This seems to go against the law of inertia and the conservation of energy. Why does the child need a push periodically to keep moving.