The answer is alkene.
An alkane is a saturated hydrocarbon, thi is it has only single bonds.
Alkenes and alkynes are unsaturated: alkenes have double bonds and alkynes have triple bonds.
Subsituted hydrocarbon, is a hydrocarbon with one hydrogen substituted by another element or a group.
For example:
CH3 - CH - CH3
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F
Answer:
Producers are autotrophs, or organisms that produce their own food. ... They are at the bottom of the food chain because they are eaten by other organisms, and they don't need to eat for energy. Producers make their own food through the process of photosynthesis instead of eating organic matter.
Sir William Alexander Clarke Bustamante.
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