What refers to the amount of a substance in a given space

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

The law of states that traits are passed from parents to offspring independently of one another.. true or false

Which body region are part of the cephalic region?