Expiration occurs when the lungs recoil.
It allows for variation in the offspring
The DNA molecule is a double helix, shaped like a twisted ladder.
Answer:
phosphorus
Explanation:
Since Phosphorus is an essential component of phospholipids, nucleic acids, phosphoproteins (casein), high energy phosphate esters (ATP), hexose phosphates, creatine phosphate, it also provides strength to the exoskeletons of clams and oysters.
