A scientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas. They are each made of matter. Some are compounds and some are elements. They all contain atoms. [ -best describe all of the materials he is using in the investigation. ]
It relates perfectly because the experts of respiratory therapy are usually dealing with patients that can’t breathe or are having <span>blockage in their lungs. The exmaple could be in an emergency room where a person cannot breathe and the therapists checks the volume of oxygen in the patient and his lungs to see if there is something blocking the airways</span>
Answer:
The return of blood to the heart is assisted by the action of the skeletal- muscle pump. As muscles move, they squeeze the veins running through them. Veins contain a series of one-way valves, and they are squeezed, blood is pushed through the valves, which then close to prevent backflow.
Answer:
Because Without Earthquake Research Earth Will Be DESTROYED