Answer:
The answer is letter A.
Explanation:
A loss-of-function mutant in the gene encoding Mad2.
Diffusion across the alveoli
A caterpillar eats the leaves of a tree. Next, the caterpillar is eaten by a bird. When the bird dies, it slowly decomposes into the soil to provide nutrients for other trees/bushes/etc.
Answer:
The death rate is becoming higher than the birth rate.
Explanation:
Birth rate means the population increases, and death means decreases.