Animals use the respiratory system to breathe in oxygen and other gases and expel gases like CO2, right? O2 in, CO2 out.
Answer:
kingdom, phylum, class, order, family, genus, and species
Explanation:
Answer:
Gene therapy is used to correct defective genes in order to cure a disease or help your body better fight disease. Researchers are investigating several ways to do this, including: Replacing mutated genes. Some cells become diseased because certain genes work incorrectly or no longer work at all
