The universe
became
transparent
Gravity came
into existence
The universe
was at its
densest.
O to 10-0
seconds
10 seconds
to 10 seconds
10 seconds
to 20 mins
20 mins to
380,000 years
380,000 years
to 560 million years
Based upon what you have learned in this lesson, write an essay of no less than 200 words on health behaviors, risk factors, and prevention of coronary artery disease (cad) through exercise.