First question: “Every system in the body relies on oxygen. From cognition to digestion, effective breathing can not only provide you with a greater sense of mental clarity, it can also help you sleep better, digest food more efficiently, improve your body's immune response, and reduce stress levels.” -google
Answer: D. Individuals may now have their DNA analyzed to determine ancestry.
Explanation:
Annelids have neither an external or an internal shell. Examples of annelids are
earthworms and leeches.
A ..................................................
The innermost layer of the meninges is the pia mater.
