Toxic

For the water quality characteristic I have chosen fluoride. Here in Vancouver, WA the water is fluoridated using sodium fluoride of about 0.6-0.8 milligrams per liter. Most water supplies contain naturally occurring fluoride and many communities add fluoride to water. The decision for fluoride to be added to Vancouver's drinking water occurred in 1962 and ever since then has been fluoridated in compliance with Vancouver Municipal Code and EPA standards. Fluoride is an important characteristic…

planets. Lastly, fungicides can be used to control disease attacks on crops. The use of pesticides in our society is extremely valuable to how we manage, process, store, and transport agricultural merchandises. However, as we continue to use these toxic chemicals to help preserve our vegetables and fruits, protect our crops, and fight against diseases that may threaten our health, we undoubtedly fail to recognize the health implications that threatens our society. I would like to argue how…

pledging to consider the information in its human risk health assessment for the massive project.” (Roberts, 2016, n.p.) Although they are monitoring the effects their project is having on the water, the Inuit are not happy. By monitoring the levels of toxic chemicals in the water, Nalcor Energy would be able to “issue warnings about consuming fish or seal” (Roberts, 2016, n.p.) if the levels got too high and would begin to harm the people consuming it. This is not acceptable. The level of…

The Family Tetraodontidae and its Toxic Defense Mechanism Tetraodontidae, a family commonly known as the pufferfish, uses unique defense mechanisms in the wild to protect themselves against predators. Pufferfish diet consists mainly of invertebrates, so they are not viewed as dangerous or predatory animals in their ecosystems. These defense mechanisms are necessary to the survival of the Tetraodontidae family. The Tetraodontidae family’s defense mechanisms of inflation and use of the deadly…

are many man-made chemicals that are completely harmless. All chemicals, if taken in a high enough dose are toxic –even water, which is considered essential to life. “The dose makes the poison” applies to all chemicals, man-made or natural(SenseAboutScience). However, just because these chemicals are not toxic doesn’t essential mean they are safe. Like Aspartame for example, its not toxic at the levels we would ingest, it still causes cancer at these levels. As such with Caramel food…

All living organisms require water to survive, however, with each passing year toxic materials, oils and debris are plaguing our precious oceans, harming marine wildlife, plants, and humans. As this process continue to get bigger these pollutants will play a huge role in the amount of oxygen expelled, water quality and decrease all food sources that are provided by the ocean, having damaging effects on humans and marine wildlife. We all need to be more aware of the influences that we possess in…

Write a short summary with conclusions about the trypan blue and SDH results. Do the class results agree with the expected effects of the various treatments? Trypan blue exclusion is a method in which the blue dye is a crucial tool used to stain the nucleus of a cell that is non-viable or damaged. This shows early stages of toxicity whereas, the SDH leakage indicates a later onset of toxicity. The SDH leakage method requires the cell to have larger holes in the membrane to allow the sorbitol…

Atrazine is one of the most commonly used herbicides in the world; it is estimated that approximately 80 million pounds of atrazine is applied annually in the United States alone (Hayes et al, 2010). Atrazine is used so frequently because it is cheap and it increases crop yield. However, it has been found that atrazine in levels even as low as 2 ppb (parts per billion) can have adverse effects on the reproductive systems of many vertebrates, which includes humans (Hayes et al, 2010). According…

and environment, endangering the whole marine life and ecosystems as well as our own heath Plastics exert its harmful and toxic effect on the marine wildlife as a result of ingesting the plastics, also from leaching of plastic toxins, and from getting entangled in…

The controversy around pesticides use! Reading all the different articles in the American Earth book highlighted many important issues and concerned about our society regarding the environment and its impact on our health and the health of the wildlife around us. Though, I can say that the one topic that made me really stop to think and felt that it hits closer to home, was the one about pesticides. After all my dad died 4 years ago because of stomach cancer. What did my dad eat, and how safe…