What do you understand by pollution?please give an easy answer that ca

1.	What do you understand by pollution?please give an easy answer that can be easy to learn
Answer» <html><body><a href="https://interviewquestions.tuteehub.com/tag/ong-586312" style="font-weight:bold;" target="_blank" title="Click to know more about ONG">ONG</a>><a href="https://interviewquestions.tuteehub.com/tag/answer-15557" style="font-weight:bold;" target="_blank" title="Click to know more about ANSWER">ANSWER</a>:<p>Pollution is the introduction of harmful materials into the <a href="https://interviewquestions.tuteehub.com/tag/environment-15858" style="font-weight:bold;" target="_blank" title="Click to know more about ENVIRONMENT">ENVIRONMENT</a>. These harmful materials are called pollutants. Pollutants can be natural, such as volcanic <a href="https://interviewquestions.tuteehub.com/tag/ash-885577" style="font-weight:bold;" target="_blank" title="Click to know more about ASH">ASH</a>. They can also be created by human activity, such as trash or runoff produced by <a href="https://interviewquestions.tuteehub.com/tag/factories-982821" style="font-weight:bold;" target="_blank" title="Click to know more about FACTORIES">FACTORIES</a>.</p></body></html>

What do you understand by pollution?please give an easy answer that can be easy to learn