Agroup of scientists is developing a new chemical compound. they want to test its effects on an aquatic ecosystem using a nearby ocean bay. they enclose a region of a bay with an insulated covering to create an isolated system in which to do their experiment. predict what would happen to living organisms in this isolated experimental system.

Though scientists will isolate the region, however, they cannot guarantee the protection of the living organism of the isolated ocean. The influence on the organism by the compound may be catastrophic or slight on the basis of the experiment done. This experiment might eradicate all the living species and plants within the separated region. This may also result in the extinction of few species on the basis of the size of the separated region being experimented.

answer; ///i believe that the correct answer is (a) specialized cells)

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation: