Two students are eating lunch. One student tells the other who is eating a peanut butter and jelly sandwich, "All the energy stored in that sandwich came from plants harnessing the power of the sun as chemical energy!" Is this statement true or false?

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.

Look at the photo of the leaf, which term best describes this leaf ? a-simple.b-parallel.c-lobed.d-tooth.

Your sense of touch depends upon: a. direct contact b. heat chemical c. reactions d. pain