The alveoli. These little air sacs are found on the end of the bronchioles and are the place where oxygen enters the blood and the carbon dioxide leaves.
Answer:
the relationship between genes, proteins, and traits a gene codes for a particular protein that is involved in the expression of a trait
Explanation:
characteristics determined by single genes are called Mendelian traits
Answer:
B) electron - negative charge.
Explanation:
Our muscles are attached to our skeleton to help us move. If we had no skeleton then our muscles would hang limply, making it harder for us to move.