Title

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.

Location

BS 355

Start Date

3-25-2023 10:45 AM

Presentation Format

Oral and Written

Group Project

No

COinS
 
Mar 25th, 10:45 AM

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.