What is the function of the outer ear?
a. to transmit sound waves to the brain
b. to protect the eat and gather sound waves
c. to gather and convert sound waves
d. to house the eardrum

Generally spontaneous human combustion is something that still bewilders some, human combustion happens very rarely and doesn't affect the surrounding areas, so unless you want to set your self on fire, human combustion will remain spontaneous and very rare.