Very tall clouds, whose bases occur at a low altitude and whose tops rest at a high altitude, are called what?

clouds of altitude

middle clouds

lenticular clouds

clouds of vertical development

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:

hammurabi rulers

good lesson