Earth's mean surface temperature remains about the same because — A. incoming solar energy is balanced by outgoing radiation
B. more solar energy is absorbed by land than by oceans
C. most of the sun's radiation that passes through the atmosphere is infrared radiation
D. outgoing solar radiation that escapes the atmosphere is in the visible spectrum

during the process of dna replication, brdu can replace thymidine and incorporate into the newly synthesized dna, cell proliferation thus can be reflected in the extent of brdu incorporation.

answer; synapse;

plants absorb water from the soil by osmosis. root hair cells are adapted for this by having a large surface area to speed up osmosis. the absorbed water is transported through the roots to the rest of the plant where it is used for different purposes: it transports dissolved minerals around the plant.