Answer:
it regulates the calcium levels in the blood
Explanation:
The answer is B and D i learned this in biology last week
Answer: c. Part of an ecosystem
Explanation: the fish, crustaceans, molluscs and bacteria are part of a community, but sand is not. Each of those species is part of a population.
Explanation:
Safranin is used to prepare an onion peel slide. Explanation: We use this strain because this strain can differentiate the region of the cells darker than the other regions.
