Matching evolutionary terms Complete the sentences with the correct terms.
selection
Environmental conditions often favor one__
over another.

phenotype or trait

Explanation: if it is really cold a mouse with thicker fur (phenotype) will do better

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:

2%? i tried finding the exact sorry if it's not 100% correct ; -;