B. Are produced only by living things
A triple bonded carbon is called an alkyne. (with a y, e for double bond, a for single bond)
The gallionella bacteria reaction
that is Fe2+ → Fe3+ is example of oxidation reaction (answer A)
Explanation
oxidation reaction reaction occurs when electrons are lost during reaction by a molecule or ion or atom. when oxidation occurs the oxidation state of the molecule or ion or atom increases. For this reason Fe2+ → Fe3+ is a oxidation reaction since the oxidation state move from oxidation state 2 to 3
Answer:
C
Explanation:
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They speed up the breakdown of food in the stomach.