The Earth has formed and transformed over billions of years. Over these billions of years the different eons, eras, and periods how have water levels affected the life on Earth during those times? The amount of water on Earth is basically consistent at all times. With that being said how has the storage of this water affected the formation of fossils and when they have been found? How will the future be affected by the changing forms of water on Earth?

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.