Manganese, Copper, and Chromium on the Survival Rate of Moina
School Name
Spring Valley High School
Grade Level
11th Grade
Presentation Topic
Environmental Science
Presentation Type
Non-Mentored
Abstract
The purpose of this project is to pinpoint the most dangerous pollutants found in freshwater ecosystems by comparing heavy metals and their toxicity towards water fleas. The project consisted of thirty samples of each heavy metal that were placed into ten ounce plastic cups for copper, chromium, and manganese. The samples contained one gram of each metal which was placed into every cup, as well as an initial ten Moina. Each trial was documented over a three day experimentation period. `The results did not support the hypothesis, as all of the Moina that were exposed to the copper concentrations died within the first twenty four hours. The sample mean of the Moina exposed to the concentration of manganese was 2.2, the median was 2, the minimum was 0, the maximum was 5, and the mode was 1. The sample mean of the Moina exposed to the concentration of chromium was 2.77, the median was 2.5, the minimum was 0, the maximum was 7, and the mode was 2. The sample mean of the control was 8.3, the median was 8, the minimum was 7, the maximum was 10, and the mode was 8. The inferential stats showed a significance in change to the Moina populations from day one to three among all of the trials.
Recommended Citation
Horman, William, "Manganese, Copper, and Chromium on the Survival Rate of Moina" (2023). South Carolina Junior Academy of Science. 78.
https://scholarexchange.furman.edu/scjas/2023/all/78
Location
BS 355
Start Date
3-25-2023 10:45 AM
Presentation Format
Oral and Written
Group Project
No
Manganese, Copper, and Chromium on the Survival Rate of Moina
BS 355
The purpose of this project is to pinpoint the most dangerous pollutants found in freshwater ecosystems by comparing heavy metals and their toxicity towards water fleas. The project consisted of thirty samples of each heavy metal that were placed into ten ounce plastic cups for copper, chromium, and manganese. The samples contained one gram of each metal which was placed into every cup, as well as an initial ten Moina. Each trial was documented over a three day experimentation period. `The results did not support the hypothesis, as all of the Moina that were exposed to the copper concentrations died within the first twenty four hours. The sample mean of the Moina exposed to the concentration of manganese was 2.2, the median was 2, the minimum was 0, the maximum was 5, and the mode was 1. The sample mean of the Moina exposed to the concentration of chromium was 2.77, the median was 2.5, the minimum was 0, the maximum was 7, and the mode was 2. The sample mean of the control was 8.3, the median was 8, the minimum was 7, the maximum was 10, and the mode was 8. The inferential stats showed a significance in change to the Moina populations from day one to three among all of the trials.
