What happens when oxygen atoms share electrons?

A. They form polar molecules

B. They form covalent bonds

C. They form ionic bonds

D. They form water molecules

Which of the following best describes cell membrane

Toxins from seafood, mushrooms and mold present great potential for

Which statement best summarizes Gregor Mendel's contribution to science? A. Mendel invented green pea by cross-breeding thousands of pea plants. B. Mendel discovered green peas and yellow peas. C.

How are carrying capacity and population density related?

What happens to the energy level of particles when melting occurs? A) It increases B) It decreases C) it stays the same D) It increases and decreases rapidly

A species displaying which of the survivorship curves is likely to produce the most offspring?

Which of the following statements is true? Parasites benefit their hosts. Parasitism causes both the parasite and host to adapt and evolve. All parasites stay with their host until the host dies.

What do gradualism and punctuated equilibrium have in common? A. They are both explanations of the rate of evolutionary change. B. They are both explanations that were put forth by Darwin. C. They both discredit the theory of evolution. D.

The human immunodeficiency viris (hiv) is a bloodborne pathogen that is spread by

A cell that is undergoing mitosis is examined with a light microscope. an observation that would allow for identification of the cell as an animal cell rather than a plant cell would be