Which two factors can both cause a population to increase?
birth rate and emigration
birth rate and immigration
death rate and immigration
death rate and emigration

What feature of cell theory is best demonstrated in the image

Which of the following types of stars are dim but can have high surface temperatures? giants main sequence stars supergiants dwarfs

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.