2 is the best worded out of 2 and 4. 3 is not true, you can measure oxygen with an instrument. 1 has dry seeds with don't have water, so they stay dormant instead of respire.
Answer: <u>Option H; Spread of the disease that reduced the fertility rates in manatees</u>.
Explanation: Due to the disease, the population of manatees, which got affected died. This lead to decrease in fertility rate, which had a major impact on the population of the manatees. Option G is incorrect, because increase in range would actually increase the population.
Answer: c. Death
Explanation:
Apostosis which means program cell death is this occurs when the cell is partially damaged or when the a mutant DNA can not be repaired by DNA repair mechanism, cells undergo a this process called apostosis which prevent the cell from passing the defect DNA to daughter cells.
Differentiation and growth needs reshaping of organs, this could be done only when old cells are removed from the area. Removal of superfluous, aged or partial damaged cells is done by apostosis.
