Viruses
Less then 1 percent cause disease. Disease causing bacteria produce toxins- powerful chemicals that damage cells and make you ill.
There can be several conditions that produce what you describe- ONE of them may be Huntington's Disease.
cause obviously it is a parasitic plant DERR
All bacteria produce chemicals. Could you possibly be more specific?
A parasitic plant.
yes! fungi produce chemicals that digest plant remains.
Chemicals for chemical nuclear warfare
They produce chemicals to fight infection and later produce chemicals to "turn off" the immune system.
What fruit or vegetable will produce the most electricity
hormones
Yes. Any solid object moving through a fluid does.
pheromones .