I'm pretty sure the answer is D
The answer is “it is the gap between neurons” and “it ensures that information travels in one direction only.”
I believe the answer is A!
Answer:
B. Australia is isolated
Explanation:
They originated in South America and spread throughout the world, but due to competition on other continents, the other marsupials died out, while the ones on Australia lived.
Your body breaks down protein and then uses the nucleotides to build protein again because you need the protein for your body so you can gain energy
Hope This Helps.
