This blood vessel has thin walls that allows nutrients and gases to pass easily between the blood and body cells .A).Arteries
B).Capillaries
C).Veins
D).Aorta

(99 points) be serious! how do farts work? how do you fart without it stinking? serious answers only

Hershey and chase confirmed that dna, not protein, was the genetic material. how do the results of their two experiments support this conclusion?

Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled