Answer:
Options B and D
Explanation:
In animals, gaseous exchange takes place in the alveoli in the lungs. Generally, animals breath-out (exhale) carbon dioxide and breath-in (inhale) oxygen. Thus, carbon moves from the blood in the form of carbon dioxide into the alveoli in the lungs while the oxygen inhaled moves from the alveoli in the lungs to the blood where it is transported round the body as oxyhaemoglobin.
Can be the skin or tongue
Check the file I added, Brainly wouldn't let me comment my answer for some reason.
The correct answer is A.
It will help reduce the flow of blood.
The answer is actually D.
Explanation: The bystander effect is a social psychological claim that individuals are less likely to help a victim when others are present and this completely coincides with letter D.