The right answer here is option C. They occur in areas with ancient, mineral-poor soil.
An example of that is Amazonia in Brazil, it's one of the biggest forests on earth, and at the same time, we know its soil is poor, but at the same time it has some special materials that can be found there, such as niobium. This forest is, too, rainy almost all the time, and this many trees maintain the temperature of the whole earth stabilized. These kinds of forests can grow in this soil because of the burlap, that's organic materials from its own trees. It's consumed by them, and through this way, it survives and extends its size when humans don't use its resources too much.
Answer: Propionly CoA
Explanation:
During oxidation of odd chain fatty acids, the odd chain are oxidized exactly in the same manner as even chains. However, after successive removal of 2 carbon units, at the end, one 3-carbon unit, propionyl CoA is formed.
Propionyl CoA is a product of beta oxidation of odd chain fatty acids.
In three steps reaction propionyl-CoA can be converted to succinyl-CoA, an intermediate of the citric acid cycle which is converted to oxaloacetate, and is used for gluconeogenesis.
