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Team Members:
Bethany Frid Michelle Thompson Natalie Tran |
Concepts of Biology #107 Dr. Benjamin Aronson University of Redlands |
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Introduction
We frequently use pesticides as a weapon to
kill those annoying pests that threaten our homes and gardens. But how often do
we stop to think of how hazardous they could be? The agricultural industry uses
a large amount of pesticide that has negative effects on non-target subjects
such as plants, animal There are several insects and other animals
that live in the direct vicinity of plants that the pesticide is used on.
When such living organisms come in contact with a plant, or consume a plant that
has the pesticide spray on it, the pesticide can then potentially penetrate into
the living organism and adversely effect it. When pesticide is sprayed,
however, it does not only get onto the plant. It also can land onto other
plants that may not have been intended to get sprayed, and could potentially
cause harm to these plants. In addition, pesticides get into the soil,
into water, and are dispersed into the air. Therefore, if living organisms
are coming in
In order to dismiss or solidify this concern, we have performed a series of experiments in order to test the toxicity of Ortho-Home Defense, a popular domestic pesticide. For a comprehensive conclusion we tested four different subjects: Bacillus Cereus (a bacterium), Drosophila Melanogaster (a fruit fly), and 2 types of garden seeds (radish and burpee stringless bean). Each experiment consisted of two groups: one exposed to the pesticide, and one that was not. The general consensus derived from these experiments is that Ortho-Home Defense is noticeably toxic to non-target organisms. |
Date of last update: 12/09/2004