<span>Parathyroid Hormone (PTH) is a hormone that signals an increase in blood calcium (Ca2+) within into the bloodstream when below normal ranges. When blood calcium is within normal ranges Calcitonin is released from the thyroid to stop blood calcium from increasing thus maintaining equilibrium.</span>
I would think the answer would be A because matter does involve living things.
Answer:
The movement of food through the gastrointestinal tract by the contraction of muscles is called Peristalsis.
The answer is <span>B. haploid; reproductive.
</span><span>A haploid cell contains half the number of
chromosomes found in the diploid cell, namely, it contains only one set of
chromosomes. So, the condition must be haploid. The gamete cells in the organism are sperm cells and egg cells, thus, reproductive cells. So, the condition must be reproductive.</span>