Which of these protects the Earth from harmful radiation when found in the stratosphere, but is a pollutant at lower altitudes? A. carbon B. oxygen C. ozone D. hydrogen

Cells tend to have a relatively small and uniform size. why aren’t cells larger?

There is a liquid capsule inside a cup full of liquid. the cup full of liquid has salt in it and the liquid capsule has no salt in it. in which direction will the solvent flow? a. the salt does not have to move b. from the capsule to the larger cup c. equally between the capsule and the cup d. from the larger cup to the capsule

Match with o for organic and i for inorganic for each compound