Why did DNA technology lead to more use of cladistics?
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A. It showed that gene flow happens between populations.
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B. It showed that most traits result from genetic drift.
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C. It showed that different-looking animals are actually related.
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D. It showed that the Linnaean system was very accurate.

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:

well, that's easy; the answer's c, "it reduces contamination of the water and substrate of the estuary."

b. climate change will cause an increase in biodiversity of all ecosystems.

hope this