Alveoli are tiny balloon shaped structures and are very important part of the respiratory system. The function of the alveoli is to exchange oxygen and carbon dioxide molecules to and from the bloodstream. Through them oxygen enters the bloodstream and some of the waste products of metabolism (carbon dioxide) exit the body.
Blood is NOT transferred by alveoli. Correct answer: B
Burning less than 400 calories per hour is not the correct about the benefit of swimming. So option “D” is the correct option. In reality a person burns between 450 to 900 calories per hour while swimming. Swimming actually helps in the full body exercise of a person. This proves that option “B”” is not applicable. Swimming is also a great exercise for cross country training and so option “C” also is removed. Option “A” cannot be applied for this question as maximum number of joints are supported by the water.
Answer:
a way to not spread a virus is proper hygiene wash Ur hands before u cook make sure u don't cough sneeze or blow Ur nose around the food and it will help if u wash Ur hands every time u use the bathroom to
Explanation:
False.
People can control the amount of food they eat but they can not control how quickly their metabolism works. They can however eat certain foods that increase the speed but still. The answer is FALSE.
It was mostly prevented by planting trees.