Answer:
DNA is a Deoxyribose nucleic acid and our Dna strand is double helix
Explanation:
I kow this because if you close you see two strands
Neurotransmitters is the word you're looking for.
A gateway substance is something that may be menial but could lead to something bigger, an example is weed in the drugs world, weed is not hard to get and is usually a gateway drug to stronger types of drugs and potentially more dangerous
Maybe b and c ? It’s makes sense to wear protective clothing and staying indoors
Because it was not tested multiple times by other scientists
