Answer:
Science is a body of knowledge that explain the process by which that knowledge is developed.
Answer:
"the presence in or introduction into the environment of a substance or thing that has harmful or poisonous effects."
To break it down, harmful chemicals and other things go into the air and that is called pollution. I believe that you can also pollute the water when you put items like plastic and such in it.
Explanation:
If the medication may cause drowsiness, the person taking them does not need to drive, operate machinery, or conduct any other business that requires one to be alert.
Answer:
b. saliva in the mouth
Explanation:
saliva contains enzymes that help break down food
A good example of environmental pressure could be the demand for agriculture land is destroying native habitats.