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Humans breathe pure oxygen in diving suits because that is the gas humans and animals are required to have to stay alive and not suffocate. If a person scuba dives with pure oxygen they should dip a small object in ponaris and rub it on the inside of their nose so the tender skin of the inner nostril doesn't crack and bleed
A person that is good at it.
if he can not touch or talk then he can see
Yes it is. A diving board is a Class 1 lever. The fulcrum is the screws that hold the diving board in place (the rigid part), the load is the person and the effort force is the force the person exerts when he/she braces herself/himself to jump.
One can find information on cave diving through the cave diving website. Another website to look at is Waves n Caves, and if a person wants to know specifically about cave diving in Britain they can search the cave diving group website.
Medabolic equivalents or METs are units used to measure the amount of oxygen a person consumes during exercise.
diver
Dowsers use diving rods.
The best way to paralyze an appendage (arms or legs) is the to jab them at the joint that connects them to their upper body. To temporarily paralyze someones arm is best to hit them on a certain nerve between their arm and shoulder. To do this, a person would have to rely on a great deal of knowledge and skill to pinpoint this location exactly.
sky diving, bungee jumping, rock climbing, scuba diving, surfing, parasailing
Its not really scuba diving but its considered scuba diving. Also known as the hookah system. its when you have a gas powered motor pumping fresh air to the person or person's diving below, there can be up to four people diving off of one hookah system. the benefit of this system is that there is no decompression time and you can be underwater pretty much all day if someone fills the gas tank on the engine pumping air. but you are kinda tied down to something so i don't think its true scuba diving.
Yes you can get a certificate just as easy as the next person for scuba diving.