Answer:
I dont know 1
2- bike riding, running, walking
3- bikes
Explanation:
Whenever possible, the most efficient way to perform rescue breathing is mouth to mouth or also known as CPR. By this the rescuer is giving air to someone who needed it or someone who is in need of air.
People become skeptical due to the overflowing abundance of scientific evidence that backs more proof with certain treatments. It makes people more comfortable over all if it is more tested. It would help prove theories if people were more skeptical, since they didn't think it would work previously.