Answer:
C)
Explanation:
A measure of the amount of open space within unconsolidated sediment or rock.
The aortic valve prevents backward flow of blood into the left ventricle.
<span>In the lock-and-key model of enzyme action, the "Substrate" fits into the "Active site" of the enzyme
Hope this helps!</span>
Mitochondria are known as the powerhouse of cells because they are responsible for the releasing of energy from food. For example: cellular respiration.
