Which marine ecosystem depends on upwelling from the seafloor to maintain its high productivity? O Coral reefs
O Intertidal zones
O Kelp forests
O Neritic zones

Hormones are chemical molecules produced by endocrine glands. one such endocrine gland is the thyroid gland, which synthesizes the thyroid hormone, which in turn affects the heart muscles. which two statements describe the probable reason for the function of the hormone? the cells in the heart have specific receptors that allow for the intake of hormones. the heart and the endocrine glands have the exact same types of cells. all cells make the same types of hormones. thyroid hormones show their effect on the heart by means of specialized cells. thyroid cells and cardiac cells have different dna.

Which are reasons cells undergo cell division?

Knowing the importance of the essential elements, why would someone chose a diet that does not address all of them?