Answer:
Channels discriminate between solutes mainly on the basis of size and electric charge.
Explanation:
1.Sunlight zone
2.Twilight zone
3.Midnight Zone
4.Abyssal zone
Pandas live for about 20 or so years
Answer:
b. complementary proteins
Explanation:
Complementary proteins are proteins that contain all adequate amounts of the essential amino acids when two or more protein sources that are deficient or low in some amino acids are combined together to compensate for the deficiency of the other. The protein sources can be eaten together in a meal or consumed the same day to get a complete protein.
For example, grains are deficient in lysine, while legumes are usually deficient in methionine. Combination of rice which is a grain, together with beans which is a legume, would give us complementary protein diet, making it a complete protein source with all adequate essential amino acids available.
Answer:
Mutations and sexual reproduction increase genetic variation in a population. Natural selection occurs when environmental pressures favor certain traits that are passed on to offspring. ... Individuals may mutate, but natural selection acts by shifting the characteristics of the population as a whole.
Explanation:
