, , and , can help children prevent overweight and obesity. Obesity costs the US healthcare system $147 billion per .

A.) healthy eating behaviors,

B.) regular physical activity,

C.) reduced sedentary activity

D.) year

Explanation:

healthy eating behaviors, regular physical activity, and reduced sedentary activity can help children prevent overweight and obesity.

Obesity costs the US healthcare system $147 billion per year.

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

i think they are all correct

explanation:

they seem good