<span>a tide just after the first or third quarters of the moon when there is least difference between high and low water.</span>
<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>
Answer:
Left atrium
Explanation:
The four pulmonary veins return oxygenated blood to the left atrium.
The two types of waste in the cellular respiration are aerobic respiration and anaerobic respiration.
Animals eat marine creatures
we depend on water from marine ecosystems
