The main reason that it's important to test only one variable at a time is so that

a. scientists can have many hypotheses tested at once.
b. quantitative data can be recorded.
c. qualitative data can be recorded.
d. scientists can easily tell which variable caused the results.

What makes the results of a scientific experiment accurate? a) having multiple trials b) lacking any supporting data c) working in a lab d) using a hypothesis that is always true

The term equestrian relates to which animal? bulls cows horses pigs

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.