NO LINKS PLEASE Which of the following was NOT a discovery that William Harvey made about the body's circulatory system?

O A. Blood flows in a circle through the body.

O B. Blood flows through pores in the tissues.

O C. The heart has one way valves to direct blood flow.

OD. Blood leaves the heart through arteries and returns through veins.

Next pretest: evolution select the correct answer in a laboratory population of flies, the female flies are gray and the males are yellowish gray. biologists observed that all the male flies had an equal chance for reproduction, but the male flies with the brightest colors were more likely to successfully reproduce. what phenomenon could explain such a change? a sexual selection b. disruptive selection c. stabilizing selection d. directional selection

Which to produce involved from a symbiotic relationship of organisms which resulted in eukaryotic organisms contain chloroplast

The two main stages of cell division are called