Which of the following are possible causes of global warming? Check all that apply. human activity

differences in emitted energy from Earth

natural fluctuations

changes in distance to the Sun

poor measurement

Models are non-visual ways of coummincating how someone thinks about something in the natural world

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this

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.