The muscular system is composed of approximately skeletal muscles.

When do people generally experience rapid growth for a second time? a. between the ages of 3 and 9 b. between the ages of 9 and 12 c. between the ages of 13 and 20 d. between the ages of 25 and 29 which action occurs in the third stage of cell division? a. the nuclear material of cell is copied exactly. b. the nuclear membrane disappears. c. the cell forms two nuclei d. the nuclear material separates, with half moving to either side of the cell.

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The bar chart shows the percentage of adults in the u.s. living with certain heart disease risk factors. which conclusion can be drawn from the chart? a. more adults reported leading an inactive lifestyle and living with obesity when compared to other risk factors. b. obesity and high blood pressure share the same risk for developing heart disease. c. smoking cigarettes is the only risk factor that stems from an unhealthy lifestyle choice. d. diabetes affects so few adults in the u.s. that it is not a risk factor for heart disease.