Glyphosate, a chemical which likely causes cancer and creates other health problems, is the main ingredient in Round Up, a commonly bought weed killer for homeowners. The cycle of Round Up may begin with a homeowner spraying their driveway, but can easily end up in our water supply, our lakes, and our lungs. The chemical is easily absorbed by people and gets into their blood, causing a sick feeling. Fish can absorb it as well, and are later eaten by humans who end up getting sick as well. The chemical concentrates itself on your digestive tract and bones, causing numerous health problems. This cycle is one of not being conscientious of your atmosphere and your neighbors, and makes it relatively easy for anyone to get sick. Harmful chemicals like this may seem useful at the time, but they end up being a nuisance.