Answer: D
Explanation: when gasoline is burned by the car, it releases gas which pollutes the air.
Answer:
A biological environment is a physical environment that has living things in it.
The only physical environments that I know of that are not biological environments are human-constructed sterile facilities, or planets/moons/asteroids/other celestial objects that can’t support life.
<span>The simplest, yet most effective method of preventing the spread of an infectious disease is to </span>wash your hands in between patient contacts.
Washing hands regularly in the right moment will cause the pathogen harder to spread, thus making it less likely to infect other people.
