In an experiment, the weight that mice gain is the dependent variable and the temperature of the environment is the independent variable. what must be held constant to obtain valid experimental results? options: a- the weight of the mice b- the color of the mouse cages c- the type of food given to the mice d- the temperature of the laboratory rooms

Why would satellite imagery be more useful than a map in some instances? check all that apply. provides landmarks such as buildings is an overhead view of earth’s features can be used when internet is not available provides small details of roads for digital maps provides various methods of transportation to a location

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.

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.