When people run long distances, their muscles require increased amounts of oxygen. Which system is responsible for carrying this oxygen to the muscles? Nervous

Respiratory

Digestive

Circulatory

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.

Hey i did a lot for my mom to get my mom and her she said she’s just getting dressed up she can just go to get out and

If the patient has astmah they need their inhaler. hope this !