Although environmental pollution can be caused by natural events such as <a target="_blank" rel="noopener noreferrer nofollow" class="md-crosslink" href="https://www.britannica.com/science/forest-fire">forest fires</a> and active <a target="_blank" rel="noopener noreferrer nofollow" class="md-crosslink" href="https://www.britannica.com/science/volcano">volcanoes</a>, use of the word pollution generally implies that the contaminants have an <a target="_blank" rel="noopener noreferrer nofollow" class="md-dictionary-link md-dictionary-tt-off mw" href="https://www.merriam-webster.com/dictionary/anthropogenic">anthropogenic</a> source—that is, a source created by human activities.

Although environmental pollution can be caused by natural events such as forest fires and active volcanoes, use of the word pollution generally implies that the contaminants have an anthropogenic source—that is, a source created by human activities.

Although environmental pollution can be caused by natural events such as <a href="https://www.britannica.com/science/forest-fire" rel="noopener noreferrer">forest fires</a> and active <a href="https://www.britannica.com/science/volcano" rel="noopener noreferrer">volcanoes</a>, use of the word pollution generally implies that the contaminants have an <a href="https://www.merriam-webster.com/dictionary/anthropogenic" rel="noopener noreferrer">anthropogenic</a> source—that is, a source created by human activities.

History of pollution

<a target="_blank" rel="noopener noreferrer nofollow" class="sh-anchor" href="https://www.bing.com/ck/a?!&amp;&amp;p=ef524ee00bfd905d9b5854f35569d8381c992cf6b477c9941aba5718544a98fdJmltdHM9MTczMDkzNzYwMA&amp;ptn=3&amp;ver=2&amp;hsh=4&amp;fclid=09ad6d3b-8862-65a1-01d6-781e897064be&amp;psq=Environmental+pollution%27&amp;u=a1aHR0cHM6Ly93d3cuYnJpdGFubmljYS5jb20vc2NpZW5jZS9wb2xsdXRpb24tZW52aXJvbm1lbnQ&amp;ntb=1">Environmental pollution refers to the presence of harmful substances in the environment that cause negative effects on living organisms.</a>

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Environmental pollution refers to the presence of harmful substances in the environment that cause negative effects on living organisms.

<a href="https://www.bing.com/ck/a?!&amp;&amp;p=ef524ee00bfd905d9b5854f35569d8381c992cf6b477c9941aba5718544a98fdJmltdHM9MTczMDkzNzYwMA&amp;ptn=3&amp;ver=2&amp;hsh=4&amp;fclid=09ad6d3b-8862-65a1-01d6-781e897064be&amp;psq=Environmental+pollution%27&amp;u=a1aHR0cHM6Ly93d3cuYnJpdGFubmljYS5jb20vc2NpZW5jZS9wb2xsdXRpb24tZW52aXJvbm1lbnQ&amp;ntb=1" rel="noopener noreferrer">Environmental pollution refers to the presence of harmful substances in the environment that cause negative effects on living organisms.</a>

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