In September 2014, Thomas Eric Duncan visited the United States from Liberia and was later diagnosed with the Ebola virus.
May 4, 2021
Business ethics chapter 6 | Management homework help
May 4, 2021

The Effects of Zebra and Quagga Mussels Introduced into a
Freshwater Lake

As you have learned, population dynamics are caused
by the biotic potential of the population and the effects of environmental
resistance. When there is minimal environmental resistance impacting a
population, it will exhibit a population explosion. One reason for minimal
resistance could be factors that no longer regulate a population (e.g.,
predator decline or resource increases). Another reason for a population
explosion is the introduction of an invasive species. Invasive species
are species foreign to an ecosystem and are not immediately regulated by the
environmental restraints of the particular ecosystem that they invade.
This in turn allows their populations to grow seemingly uncontrolled and to
displace other indigenous populations. Examples of such an invasive species
into North America are dreissenid mussels, commonly known as zebra and quagga
mussels. Their introduction into the Great Lakes has caused economic hardship
and a reorganization of the ecosystem. This has led, in part, to pollution-causing
effects that can be linked to an alga known as Cladophora.

Ecosystems are webs of intricately balanced interactions.
But what happens when a new species is introduced that uses a disproportionate
share of the ecosystem’s resources?

Use the attachment for assignment instructions and data



Instructor’s Name:

Assignment: SCI203
Phase 5 Lab Report

Title: Identifying
Environmental Hazards

Instructions: You will write a
1-page lab report using the scientific method to answer the following questions:

  • Why
    do you see increases and decreases in the invasive species population?
  • What
    are the implications associated with these alterations to the ecosystem as a

When your lab
report is complete – submit it in the classroom.

Part I: Using the lab
animation, fill in the data table below to help you generate your hypothesis,
outcomes, and analysis.

Years Zebra
and Quagga Mussel (density/m2)
Biomass (g/m2)
Fish (kilotons)
Trout (kilotons)

Part II: Write a 1-page lab
report using the following scientific method sections:

  • Purpose
    • State the
      purpose of the lab.
  • Introduction
    • This is an
      investigation of what is currently known about the question being asked.
      Use background information from credible references to write a short
      summary about concepts in the lab. List and cite references in APA style.
  • Hypothesis/Predicted Outcome
    • A hypothesis
      is an educated guess. Based on what you have learned and written about in
      the Introduction, state what you expect to be the results of the lab
  • Methods
    • Summarize
      the procedures that you used in the lab. The Methods section should also
      state clearly how data (numbers) were collected during the lab; this will
      be reported in the Results/Outcome section.
  • Results/Outcome
    • Provide here
      any results or data that were generated while doing the lab procedure.
  • Discussion/Analysis
    • In this
      section, state clearly whether you obtained the expected results.  Also discuss the results and what you
      learned from this lab.
    • Note: You
      can use the lab data to help you discuss the results and what you

Provide references in APA format. This includes a
reference list and in-text citations for references used in the Introduction

Give your paper a title and identify each section
as specified above. Although the hypothesis will be a 1-sentence answer, the
other sections will need to be paragraphs to adequately explain your


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