Question

1. during the exchange of air in your lungs, oxygen is being taken into your bloodstream while this substance is being released
microorganisms
carbon dioxide***
plasma
mucus
2. the gas exchange of oxygen to the bloodstream takes place in what part of respiratory system?
pharynx
bronchiole
alveoli**
trachea
3. maintaing a healthy weight allows the resportory system to work more effectivly because
oxygen is being delieverd more adequately ***
the heart does not have to pump as forcefully
the capillaries are constricted
the lung capacity allows for small amounts of air
4. if you choose to smoke your body will use this substance less efficiently.
microorganisms
carbon dioxide
plasma
oxygen****

Answer 1

Human respiratory system

1.B
2.C
3.A
4.D
I got 100%

Answer 2

I took my chances and hes 100% right just thought verifying it would help you believe him as well

Answer 3

1. B
2. C
3. A
4. D

100% PROMISE