Akey intermediate in the catabolism of fatty acids with uneven numbers of carbon atoms is

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.

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

b. lithosphere, asthenosphere, mesosphere   is the answer most likely