A negatively charged rod is placed near two neutral metal spheres, as shown below.
Which statement describes the charging method
shown?
O The spheres are charged through friction,
O The spheres develop the same charge.
O Electrons move from the rod to Sphere A.
O Electrons move from Sphere A to Sphere B.
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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:

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.