It's called dopamine. Pronounced "dope-a-mean".
Diamond
The Substance produced that kills pain is called Endorphins
A poisonous substances of natural origin produced by an animal is called venom.
water effects chemical
The hardest naturally occurring substance is diamond.
It is a natural occurence of a substance called semen.
Some effects of Nightshade plants/ vegetables (which contains substance called alkaloids) are as follows: digestive and nervous system malfunction and swollen.
You can, but you shouldn't. in the water there is a substance called mescaline which causes hallucinations.
Placebo
Chronic Exposure
The substance that disrupts the Earth's geochemical process is called a pollutant. Pollutants can be natural or man-made and can harm the health of living organisms.