Which of the following is mis-matched?
a. astrocytes - blood-brain barrier
b. ependymal cells - choroid plexus
c. ependymal cells - produce cerebrospinal fluid
d. oligodendrocytes - form myelin sheaths
e. microglia - provide support for the neuron cell body

the correct option is E. Microglia doesn't provide support for the neurone cell body.

Explanation:Microglia are located throughout the brain and is a type of neuroglia (glial cell).

As the resident macrophage cells, they act as the first form of active immune defense in the central nervous system (CNS). Their immune functions includes

The method ecologists are suggesting is bio-remediation.

Explanation:

The treatment of contaminated or polluted areas such as any surface material, water or soil by using microorganisms is termed as bio-remediation. The microorganisms tend to degrade the pollutants. Also, the method of bio remediation is cheaper then any other alternative methods. Another subtle advantage of using the method of bio remediation over other methods is that the microorganisms can be genetically engineered to degrade certain type of pollutant.