Which of the following answers does NOT explain why cells are generally so small? Group of answer choices Moving waste materials across their cell membranes is more efficient. Moving nutrients across their cell membranes is more efficient. As they grow, their surface area increases faster than their volume. As they grow, their volume increases faster than their surface area.

it's unlikely a majority of a large population would agree on issues

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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: