As Eric Wu was preparing for his assignment, he found some photos of the Moon that he took a few years ago. He thought that you might be able to use them to help him figure out when he should take the photos for About Space magazine. Look at these images and record what you notice. Then, answer the question below.

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:

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

within 30 of the equator hope this

correct answer is a. and d.