Answer:
the answer is D
Explanation:
The prefix bi indicates that the muscle has two origins
The biceps femoris muscle of the leg derives its name from having two heads of origin, long and short
since he memorized 15, he has only 10 left. so it should be 10/25
A baby's immune system is not fully developed until he/she is about six months-old. In the meantime, pregnant mothers pass immunoglobulin antibodies from their bloodstream, through the placenta, and to the fetus. These antibodies are an essential part of the fetus's immune system. They identify and bind to harmful substances, such as bacteria, viruses, and fungi that enter the body. This triggers other immune cells to destroy the foreign substance.
The fact that gravity exists as it can be repeatedly tested and verified
