In an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. in the experimental design, the amount of calcium is variable. the risk of bone fractures is

The risk of bone fractures is the dependent variable.

Explanation:

A dependent variable is a variable that needs something to happen, in other words, this variable depends on a condition, this condition is the independent variable. In the case of the experiment set out in the question, Dr. Travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fracture, in which case the risk of bone fracture depends on the existence of calcium intake. For this reason, we can conclude that the risk of increased bone fracture is a dependent variable, because it needs the occurrence of calcium intake, which is the independent variable.

- "the most famous structure by far at saqqara is djoser's step pyramid. dating from the 3rd dynasty (2667—2448 bc), it was the first all-stone complex ever built on earth."

< 3

native americans suffered high rates of poverty and unemployment.

during the late 1960s and early 1970sthe need for political militancy grew among the native americans. throughout the 1960s, they had been the nation's poorest minority group, the most deprived group, according to practically every socioeconomic measure. in 1970, the indian unemployment rate was 10 times the national average, and 40 percent of the native american people were below the poverty line.