Answer:
you want us to answer ALL those questions , cause that's alot lol but its okay if so .....
Answer:
Chemosynthesis
Chemosynthesis is used to produce food using the chemical energy stored in inorganic molecules.
that is the answer
I'm not certain on the reason it happens, but it can be lethal by stopping the heart from beating and, the lungs from contracting and expanding causing death by suffocation or cardiac arrest, also putting the body into shock.
Explanation is in the file
tinyurl.com/wtjfavyw
