Answer:
A
Explanation:
Reptiles arose about 310–320 million years ago during the Carboniferous period.
Answer: Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.
Explanation:
try it first then do it over again until it works
Answer:
Cellulose and chitin
Explanation:
i think is the answer, not really sure
