well i know how stinging nettles sting if that helps... The stinging structure of the nettle is very similar to the hypodermic needle although it predates that man-made invention by millions of years! Each sting is actually a hollow hair stiffened by silica with a swollen base that contains the venom. The tip of this hair is very brittle and when brushed against, no matter how lightly, it breaks off exposing a sharp point that penetrates the skin and delivers its stinging payload. It used to be thought that the main constituent of the sting was formic acid - the same chemical used by ants, giving that never forgotten burning sensation that demands to be scratched. Although formic acid is present in the sting, recent research has shown that the main chemicals are histamine, acetylcholine and 5-hydroxytryptamine (serotonin). A fourth ingredient has yet to be identified. Remember when stung a natural remedy will often be found close at hand. The leaves of the dock contain chemicals that neutralise the sting and also cool the skin. hope this helps you!!!
They don't need oxgyen but they need c2o which we exert and oxgyen is what plants exert
Vapor materials exert their pressure in just about every direction
athmospheric pressure
external pressure is pressure that other things exert on you
idek
yes
Pressure exerted
The fluids in your body exert pressure and prevent the atmospheric pressure from closing in. Fluids exert pressure on a container the particles collide with each other and the sides of the container.
All of the forces exerted by the individual particles in a fluid combine to make up the pressure exerted by the fluid.
The fluids in your body also exert pressure.
a. moving molecules that exert forces.
the earths surface.