Answer:
The circulatory and respiratory systems absorb oxygen from the air and transfer it to all parts of the body while absorbing carbon dioxide from the body and releasing it into the air. When a person inhales, the lungs expand and fill with fresh air.
Explanation:
Answer:
A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. Catalysts typically speed up a reaction by reducing the activation energy or changing the reaction mechanism. Enzymes are proteins that act as catalysts in biochemical reactions
Explanation: I don't know if this will help but hopefully it does
<span>The hydrogen-oxygen ratio is different.
Carbohydrates and lipids are macromolecules. These macromolecules or biomolecules help organisms to conduct and execute certain cellular activites making them alive and thrive in their certain environment. It is only that carbohydrates are more efficient at producing energy than lipids.</span>
