Answer:
Grading system helps students figure the amount of knowledge they have gained. Grades can also help students making decisions about their career. Without grades, how students would show how much they have learned?
Explanation:
Healthy adults aged 19-64 should do at least 150 minutes of moderate aerobic activity such as cycling or brisk walking every week as well as <span>strength exercises on two or more days a week that work all the major muscles. They could instead do </span><span><span>75 minutes of vigorous aerobic activity, such as running or a game of singles tennis every week, as well as </span>strength exercises on two or more days a week that work all the major muscles. They could even do a </span><span><span>mix of moderate and vigorous aerobic activity every week. </span></span>
The Childbirth delivery options include natural unassisted childbirth, assisted childbirth, and delivery by C-section (Cesarean surgery)
The blood ph level is not maintained by the respiratory system.
Answer:
Aorta, Pulmonary artery, left atrium, mitral valve, aortic valve, left ventricle, right atrium, tricuspid valve, and right ventricle Hopefully this helps!
