<span>Humans have an endoskeleton, whereas insects have exoskeletons.</span>
A chemical that effects the brain is Psychoactive drugs
Answer:
I think that the most important thing is the continuous experience and the attempt to develop and the trend to explore more herbs and try to include them in medical drugs
D.) Washed your hands first.
It is D.) because when you wash your hands first you're getting all the germs, dirt, or whatever is on your hands, off. Then you go back and put hand sanitizer to then in a sense "clean" it more. Plus who knows what is on that paper towel you just dried your hands with.