Answer:
ovum
Explanation:
The ovum is produced from oogonia or ovum 'mother cells' through a process called oogenesis in the ovary. The ovum is not only among the largest cells of the body, it is also specialized to ensure accurate fertilization by exactly one sperm cell.
A absorbing nutrients from the soil
There are three major types<span> of blood vessels: the </span>arteries<span>, which carry the blood away from the heart; the </span>capillaries<span>, which enable the actual exchange of water and chemicals between the blood and the tissues; and the </span>veins<span>, which carry blood from the </span>capillaries <span>back toward the heart.</span>
Low levels of oxygen in/by the root zone causes soil & plants to turn deficient and die .
another reason is because anaerobic microbes that have gotten waterlogged create a toxic/bad waste that harms its surrounding living plants.