Answer:
Ninety nine percent of the atmosphere is composed of Nitrogen and Oxygen
If you hit your head hard possibly. if just playing and running no.
The second question has the answer of A
Answer:
A link between cardiometabolic risk factors and race and ethnicity have been studied. It has been found that the rates of cardiometabolic risk factors are higher among ethnic minority populations such as African Americans, Hispanic Americans, and Native Americans.
Answer:Without human interference, the carbon in fossil fuels would leak slowly into the atmosphere through volcanic activity over millions of years in the slow carbon cycle. ... About half of these emissions are removed by the fast carbon cycle each year, the rest remain in the atmosphere.
Explanation:Hope this helps you!