B because cactus' are usually in a dry environment, they close their stomata during the day to keep water vapor from leaving the plant. Instead they do their processes at night to avoid extreme water loss.
Answer : B) The rate of growth will slow down by 2100.
It had been reported by the UN that the population will continue to grow worldwide, and come to a halt by 2100.
Answer:
D
Explanation:
Improve desirable traits and help determine the heritability of a trait.
Develop from a single fertilized egg and have identical genes.
Answer:
Option B, they negate each other
Explanation:
Electrical gradient force is more or less equal to the chemical gradient during an active transport. The number of electron produced during the establishment of chemical gradients, were transferred through the cellular circuit to produce electrical gradient of an equivalent amount in opposite path.
Thus, both electrical and chemical gradient are opposite to each other and hence they negate out each other.
Option B
