Which of these is a significant effect on vascular plants?

a. they were the first plants to colonize land.

b. they gave rise to mosses.

c. they maintain ecological balance by preventing desertification.

Which are forms of nitrogen that are usable by humans

After getting the slide and microscope ready, stella is eager to see the microscopic pond water specimen! she crouches around her microscope and aligns her eye with the microscope’s eyepiece. but she's only able to see a bright white light. at this point, no specimens or cells are visible on stella's pond water slide. after taking a moment to collect her thoughts, stella realizes she can't see any lifeforms because .

Which of the following is a consequence of urban heat islands? increased precipitation downwind of the city? increased precipitation upwind of the city? decreased winds within the city? increased winds within the city?