The overall structure is said to be a double helix composed of nitrogenous bases and the sugar backbone. It is also double stranded too
It should be option C that is the closest thing that I can think of,...im sorry if it is wrong
Answer:
C. Non-depletable
Explanation:
Answer is C. because it is replaced often and cannot be completely used up
All matter whether solid, liquid, gas has a chemical formula or elemental symbol.
Filtration may work, there are many types of filters capable of filtering specific types if compounds.
To prevent blood flowing back after each heartbeat. They ensure that the blood flows only in one direction (back to the heart).