How do power activities give health benefits to children and teen?

a. they prevent dizziness and fainting
b. they increase blood flow to the brain
c. they compensate for an unbalanced diet
d. they promote better bone health

i believe it is D. im not sure if im completely correct

D. They promote better bone health

Explanation:

Leg Presses,  Medicine Ball Squat Throws,  Squat Jumps,  & Barbell Curls are all some examples of power activities.

By stressing your bones (when working out), strength training can increase bone density. When you exercise regularly, your bone adapts by building more bone and becoming denser. This increased improvement in bone requires good nutrition, including calcium and Vitamin D. Another benefit of a power exercise is that it improves balance and coordination altogether.

Hope I helped!!!

GL :)

to prevent people from getting the ebola virus, countries around the world paid to doctors develop a new vaccine. now that the vaccine has been made, doctors will need to experiment on a large number of people to find out if it works safely.

what is the greatest limitation that scientists are dealing with as they try to figure out how to experiment with the ebola vaccine?

meditation is a practice of sitting still and quiet for minutes or even hours. it has been practiced for thousands of years and is even a part of religious practices for some people. carefully controlled, repeated measurements of brain activity have shown that meditation does increase certain chemicals in the brain and even grows the part of the brain that people connect with their current surroundings and activities.

are claims about the effects of meditation most likely scientific or pseudoscientific?

not pseudoscientific, because people have made claims about it but scientific observations have not been made