Combustion is the burning of a substance. It could be complete or could be incomplete. It changes the form of carbon and so it plays it's role in cycle
Basically, the P-P chain turns 4 protons into: 1 neutrino, 1 gamma ray, 1 positron, 1 helium nucleus.
A gamma ray = energy.
The chain converts hydrogen into helium and makes energy.
This is all occurring through fusion reactions where 2 protons basically smash into each other. But, it could also be e.g. a proton smashing with a deuterium nucleus. Or, other nuclei smashing together to make something else.
Hope this helps!
Answer:
im so sorry but you cannot get an answer because you have not posted the passage from the question.
Getting water, salt, and minerals using villi. That the villi do
not remove from the chyme—such as the fragments of
fruits and vegetables—passes on to the large intestine<span>
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