Lymph vessels are more like valves than veins. They prevent back flow, so things only need to go in one direction, unlike other areas of heavy traffic. Let me know if you need more. :)
Answer:
cannabis
Explanation:
it is the active ingredient in marijuana
Answer:
False
Explanation:
It can take a few days/doses for a person to become addicted and abuse the drug.
The answer is All of the above
