Answer:
B is the answer
B. Improved living conditions resulted in a decline in the mortality
rate.
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Each plant contains a branched system of tubes called xylem, which is responsible for water transport from the roots<span> (where it is taken up) to the leaves (where it is used in </span>photosynthesis<span>).
hope this answers your question</span>
The endocrine system is composed of the following:
1) hypothalamus
2) pituitary gland
3) thyroid and parathyroids
4) adrenal glands
5) pineal gland and gonads
6) pancreas
Pituitary gland is involved in gigantism. Pituitary gland produces the growth hormone. Excessive growth hormone released by the pituitary may result to gigantism.
The enlargement of the thyroid gland is called goiter. It is a symptom of hypherthyroidism, a condition wherein levels of thyroid hormones in the blood are highly excessive.
“Neuron” is another name for a nerve cell.
op level consumer in a food chain or food web that has the least number