Research Title

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Research Title

• Toxicity of Lake Munson and its effects on the
  marine environment

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Members Shannon Parrish Mwedu Mtenga Danielle
Gavin Tony Zhang
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Toxicity
When something is contaminated by a toxic
substance poisonous.
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Experimental Design

• Collect water sample from Lake Munson
• Assess the toxicity of the water sample
  collected. (pH)
• Obtain water fleas.
• Obtain DMW (dilute mineral water)
• Raise the water fleas and investigate the effects
  of Lake Munsons slight toxicity.

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Hypothesis

• The pollution in Lake Munson will increase the
  mortality rate and decrease the reproduction rate
  of its inhabitants (water fleas)

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Our Variables

• Independent variables Water sample from Lake
  Munson and diluted mineral water (DMW)
• Dependent variable The number of water fleas
• Controlled variables Amount of water used, the
  containers, food for the water fleas,
  temperature, etc.

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Observations
Left DMW Right Lake Munson Sample
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Observations Testing of PH levels of DMW (left)
and Lake Munson sample (right) DMW PH Level of
7 Lake Munson Sample (right) PH Level of 6.5
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Results

• Both independent samples (DMW and Lake Munson)
  showed a general increase in population.
• However, the sample containing the water from
  Lake Munson had a lower population and a higher
  death rate.

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Results
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Conclusion

• Overall increase in the number of water fleas in
  each of the water samples
• Water in Lake Munson proved to be habitable, but
  the reproduction rate of the water fleas was
  slightly lower.
• Hypothesis proved correct - no death and more
  reproduction in DMW samples
• Lake Munson may be degraded but it is not toxic.

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Special Thanks to Mr. Russel Frydenborg and
D.E.P. for supplying our groupwith the water
fleas, algae, yeast, and all the materialsthat
aided us in carrying out our experiment