Answer:
In general, why might ecologists be concerned when new invasive species arrive in an ecosystem? Like terrestrial environments, coral reefs can be damaged by invasive species. Reefs are also impacted by disease-causing bacteria, humans, and other biotic factors, or living parts of the ecosystem.
Explanation:
.
Bacteria can cause many infections such as pneumonia, wound infections, bloodstream infections, and also STD's.
Answer:
Calcitonin
Explanation:
Calcitonin hormone is released by the para follicular cells of the thyroid gland. This hormone works against the parathyroid hormone.
Calcitonin hormone regulates the level of calcium by decreasing the blood calcium level. This hormone inhibits the osteoclast activity of the cells and decreases the absorption of calcium in pregnant women and child. Hence, calacitonin decreases plasma calcium levels in pregnant women and children.
Thus, the correct answer is option (B).
D! Copper (Cu), Gold (Au), and Silver (Ag) are the most similar. These three are all transition metals, and are found in the same group, 11 or 1B. Due to the fact that these guys are all in the same group they're going to have the same number of valance electrons and similar properties.
Answer:
I do beivlie it is number 1
Explanation: