Sources

Pollution:

Boudreau , Diane, et al. “Pollution.” Edited by Jeannie Evers and Kara West, National Geographic Society, https://www.nationalgeographic.org/encyclopedia/pollution/.

Light Pollution:

Feltes , Alex. “Night Vision: Rhodopsin Seeing in the Dark! - Explore.” Cimi Outdoor - Guided Discoveries, https://cimioutdoored.org/night-vision-rhodopsin-seeing-in-the-dark/.

Rogers, Thea. “Rhodopsin and the Eye.” Rhodopsin and the Eye, http://www.chm.bris.ac.uk/webprojects2003/rogers/998/Rhoeye.htm.

Water Pollution

“What Are the Dangers of Water Pollution.” Water Pollution, https://www.water-pollution.org.uk/dangers-of-water-pollution/.

“15 Proven Ways We Can Reduce Water Pollution.” Arcadia, 20 July 2017, https://blog.arcadia.com/15-proven-ways-can-reduce-water-pollution/.

Land Pollution

Nag, Oishimaya Sen. “What Are the Harmful Effects of Littering?” WorldAtlas, Reunión Technology Inc., 25 Sept. 2018, https://www.worldatlas.com/articles/what-are-the-harmful-effects-of-littering.html.

Rinkesh. “Causes, Effects and Solutions to Land Pollution You'll Wish You'd Known.” Conserve Energy Future, https://www.conserve-energy-future.com/causes-effects-solutions-of-land-pollution.php.

Noise Pollution

“Noise Pollution.” National Geographic Society, 16 July 2019, https://www.nationalgeographic.org/encyclopedia/noise-pollution/.

Noise Pollution: How to Reduce the Impact of an Invisible Threat. https://www.iberdrola.com/environment/what-is-noise-pollution-causes-effects-solutions.

Air Pollution

Rutledge, Kim, et al. “Air Pollution.” Edited by Jeannie Evers, National Geographic Society, 4 Apr. 2011, https://www.nationalgeographic.org/encyclopedia/air-pollution/.

Singh, Divya. “10 Best Ways to Reduce Air Pollution & Live with Clean Air.” AQI India, 8 Sept. 2017, https://www.aqi.in/blog/10-best-ways-to-reduce-air-pollution/.