Which terms best describe the role played by each organism in an ecosystem? A species of prairie dog only eats grasses and seeds in its ecosystem. It burrows in the grassland, which aerates the soil and leads to a greater diversity of grasses. It is also a source of food for coyotes. The prairie dog is a ((keystone herbivore, herbivore, keystone prey)) and the coyote is a ((predator, keystone predator, competitor)) .

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.