Which of the following types of glial cells are the most abundant and versatile, and aid in making exchanges between capillaries and neurons? a. microglia b. ependymal cells c. oligodendrocytes d. astrocytes

The correct option is d. Astrocytes are the most abundant and versatile glial cells, and aid in making exchanges between capillaries and neurons.

Explanation:

Glial cells have the function of protecting neurons and keeping them together, that is, they act as support cells. Among them we find:

Astrocytes are the most abundant glial cells, star-shaped and located in the central nervous system (in the brain and spinal cord). Its function is to maintain an appropriate chemical environment for neurons to exchange information, helping the exchange between neurons and capillaries. In addition, they wrap the capillaries forming part of the blood-brain barrier.

The other options are also glial cells but with different functions:

Microglia: They are extremely small glial cells of the central nervous system, their function is to elicit neuronal wastes and defend or protect the brain from external microorganisms .

Ependymal cells: These are ciliated glial cells of the central nervous system that form the epidendum and cover the ventricles of the brain and the central duct of the spinal cord.

Oligodendrocytes: This type of glial cell involves some neuronal axons, provides support for neuron prolongations and produces myelin.

the answer is b)3/8x+1

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.