The answer is “it is the gap between neurons” and “it ensures that information travels in one direction only.”
The answer is D
Hope this help
Answer:
15. Cell 4 and Cell 7 will not be able to synthesize a major biological molecule. What molecule is this? Protein.
This is parasitism because one organism (mosquito) is benefitting (by acquiring nutrition) and the other organism (human) is harmed (by the red itchy bump).