Identify the true statement. Choose one: A. A biogeochemical cycle involves only physical components. B. The rock cycle is the only mass-transfer cycle on the Earth. C. The hydrologic cycle involves reservoirs above, below, and at the Earth's surface. D. The carbon cycle is an example of a purely geochemical cycle.

Florian discovers a rock that is broken into pieces. each piece has several bands. which type of rock does florian predict these pieces will change into when subjected to heat and pressure? igneous magma metamorphic sedimentary

What is the primary function of the nervous system?

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.