Which of the following best defines over-the-counter medications?
a. medications that require a written order from a doctor
b. drugs that can be purchased at a store without a prescription
c. drugs that can be taken for mind-altering effects that have no medical purpose
d. substances that cause a change in a person's physical or psychological state

answer; i believe that the correct answer is (a); a large rock being weathered by wind and rain;

b

explanation:

mitosis

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.

i dont know the answe