questions!!!!!!!

1.) ______________ are substances that can cause damage, illness, or death to organisms, usually by chemical reaction or other activity on the molecular scale, when a sufficient quantity is absorbed by an organism.

a. toxic substances
b. irritant
c. venoms

2.) ________ are poisons produced via some biological function in nature.
a. toxins
b. poisons
c. venoms

3.) ________ are usually defined as biologic toxins that are injected by a bite or sting to cause their effect.
a. toxins
b. poisons
c. venoms

4.) How are toxic substances produced?
a. by experiments in laboratories
b. by natural processes
c. both

5.) It is a process where in a tube is inserted into the stomach, followed by the pouring of water or saline down to the tube.
a. whole bowel irrigation
b. gastric lavage
c. activated charcoal