FFHNAS SHS Science Club

Most freshwater is in ice.

Just 3.5 percent of Earth’s water is fresh—that is, with few salts in it. You can find Earth’s freshwater in our lakes, rivers, and streams, but don’t forget groundwater and glaciers. Over 68 percent of Earth’s freshwater is locked up in ice and glaciers. And another 30 percent is in groundwater.

Source: https://climatekids.nasa.gov/10-things-water/

When you pop a pill to kill off a bad bug, you kill some of the good guys, too. A bacterium called Clostridium difficile can move into the prime intestinal real estate cleared out by antibiotics, causing painful inflammation and diarrhea.

https://www.discovermagazine.com/health/20-things-you-didnt-know-about-bacteria

A clean mouth has between 1,000 and 100,000 bacteria on each tooth. If that makes you squirm, consider this. The human body is home to some 1,000 species of bacteria.

Source: https://www.houseofwellness.com.au/lifestyle/healthy-living/10-facts-about-germs