Consumer waste and dead organic matter are broken down by __A___ and the nitrogen takes the form or ___B___, which is then broken down into ___C___, by ___D___. This form of nitrogen is then converted into ___E___, by ___F___. After this process ___G___, can absorb this form of nitrogen and make the nitrogen available to ___H___.

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:

i think the answer is gold im not entirely sure