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(D) Nonpoint source pollution is difficult to regulate, because its source is difficult to track.
Answer:
Parathyroid hormone
Explanation:
Parathyroid hormone is directly involved in the bones, kidneys, and the small intestine. In the bones, PTH stimulates the release of calcium in an indirect process through osteoclasts which ultimately lead to resorption of the bones.
The photosynthesis reaction(s) (by green plants in sunlight)
6 C02 + 6 H20 =>C6H1206 + 6 02
Answer:
Here's three just in case. The three core principles of evolution – variation, heredity, and differential fitness – crystalized in the 1970s, still serve as a conceptual benchmark for the theory of evolution by natural selection.
Explanation:
