Free Environmental Toxicology Essays   Free Environmental Toxicology Essays

An Ecosystems Disturbance By A Pollutant
An Ecosystem's Disturbance by a Pollutant Paul Cordova L. Lehr December 11, 1995 Freedman defines a pollutant as the occurrence of toxic substances or energy in a larger quality then the ecological communities or particular species can tolerate without suffering measurable detriment (Freeman, 562). Although the effects of a pollutant on an organism vary depending on the dose and duration (how long administered). The impact can be one of sublethality to lethality, all dependent upon the factor...

Faster Dissolved Oxygen Test Kit
Faster Dissolved Oxygen Test Kit Purpose The purpose of my project is to determine if there is any significant difference in dissolved oxygen (DO) levels as measured by the traditional HACH? method or the newly developed CHEMets? test kit under typical field conditions. Hypothesis My hypothesis is that there is no significant difference in dissolved oxygen (DO) levels as measured by the traditional HACH? method or the newly developed CHEMets? test kit under typical field conditions. Review of Li...