BIO 220 final report Part 4: writing the report guide
This is a synthesis, not a staple. If your position has not moved at all across three earlier parts, that is worth explaining rather than hiding.
Editorial process
Last reviewed · August 10, 2026
What does Part 4 of the final report require?
The instruction is to use the work you completed in Parts 1 to 3 and write your final research report, and the word write is doing the work. This is not an assembly task. A report produced by pasting three earlier submissions together will read as three earlier submissions pasted together, with three introductions, three descriptions of the same issue and an argument that restarts twice. What the final part asks for is one continuous argument that happens to contain the material you have already gathered. Start by rereading all three parts in one sitting, with the feedback on each, and write down in one sentence what you now think about the issue. That sentence is the thesis, and everything you keep from the earlier parts should serve it. Anything that does not serve it belongs in the material you gathered rather than in the report you are submitting.
The most useful question to ask yourself before drafting is whether your position moved. Over Task 1 you stated an initial position, in Task 2 you stated the strongest opposing case and answered it, and in the parts between you gathered more evidence. If none of that changed anything, either the opposing case was weak or you did not engage with it. Both are worth being honest about. A report that says the initial position held, and explains which opposing argument came closest to unsettling it and why it did not, is stronger than one that presents the same view three times with more citations. A report that says the position narrowed, and states the narrower version, is stronger still. Either way, the movement or its absence is the intellectual content of a research report and should be visible.
The length and source requirements are floors that shape the structure. A minimum of 1,000 to 1,250 words, and a minimum of six references. Across an introduction, the issue, your position, the opposing case, your rebuttal and a conclusion, that gives you roughly 150 to 200 words per section, which is enough for a claim with evidence and no more. Six references across those sections means roughly one per substantive section, so check the distribution rather than the count: a report with five sources in the supporting section and one in the opposing section is unbalanced in a way a marker will see immediately. If you have been keeping notes since Task 1 you will have more than six, which is comfortable rather than excessive, and the extra ones give you something to cut when a section runs long. If you have exactly six, every one of them has to earn its place.
Structure the report so a reader who has not seen the earlier parts can follow it. Open with the issue and why it matters, including the personal connection that made you choose it, since that is what makes the report yours. State your position early rather than building to it, because this is a research report rather than an essay of discovery. Then present the supporting evidence, then the opposing case, then your rebuttal, then a conclusion that states where you have arrived. That order matters: putting the opposing case after your evidence rather than before it means the reader already knows what is being opposed, and putting the rebuttal immediately after keeps the two adjacent so the reader does not have to hold an unanswered objection in mind while reading something else. A rebuttal separated from its objection by two pages reads as a new argument rather than as an answer.
The rewriting is the part people underestimate. Material written for Task 1 was written for a marker who had read no earlier work; material written for Task 2 assumed Task 1 was fresh in mind. Neither assumption holds in a single continuous report. So expect to rewrite transitions, delete repeated descriptions of the issue, and unify the tense and voice, which usually drift across submissions written weeks apart. Read the whole thing aloud once at the end, which is the fastest way to catch a paragraph that was written for a different document. Also unify the reference list into one alphabetical list in the required style rather than three concatenated ones, and check for duplicates, because a source cited in two earlier parts will otherwise appear twice.
On mechanics, review the Final Report Guidelines that the brief names, since they carry directions specific to Part 4 that the earlier parts did not. Use the GCU Style Guide, submit to Turnitin, and note that only Word documents can be submitted there, which catches people who have drafted somewhere else. The brief also repeats that this assignment uses a grading rubric and that you should review it before beginning; at this stage that is genuinely worth doing, because the rubric for the finished report is the one your three earlier parts have been leading toward, and it will tell you which sections are worth the most of the words you have left. With a floor of a thousand words and six sections to fill, knowing which two carry the most marks is the difference between a balanced report and an even one.
Likely learning objectives
Inferred from the brief — check these against your own rubric.
- 01Write a continuous argument rather than assembling earlier submissions.
- 02State a thesis that reflects where the research actually left you.
- 03Say whether and how your position moved, and why.
- 04Distribute six references across the sections rather than clustering them.
- 05Order the sections so the rebuttal sits immediately after the opposing case.
- 06Rewrite transitions, tense and voice for a single document.
Read the full question
Review every instruction before using the planning guidance that follows.
Length, sources and what has to be assembled
- 01A final research report of at least 1,000 to 1,250 words.
- 02Material drawn from Parts 1 to 3, rewritten into one continuous argument.
- 03A minimum of six references.
- 04Formatting according to the GCU Style Guide.
- 05Submission to Turnitin as a Word document.
Issue, position, evidence, opposition, rebuttal, conclusion
The issue and why it matters
Introduce the environmental issue once, including the personal connection that led you to choose it.
Your position
State the position you now hold, early, and note whether it changed from Task 1.
The supporting evidence
Present the strongest evidence for the position, with sources distributed rather than stacked.
The opposing case and your rebuttal
Set out the opposition at its strongest and answer it immediately, keeping the two adjacent.
Conclusion
State where the argument arrived, including what would change your mind.
Filling the gaps in your reference list
Recommended databases
- The Final Report Guidelines and the grading rubric named in the brief
- Your own notes and sources from Parts 1 to 3
- PubMed Central and your library databases, to fill any gaps toward six references
- Agency and local records for current figures, since earlier parts may now be out of date
Search sequence
- 1.Reread all three earlier parts and their feedback in one sitting before drafting.
- 2.Write the thesis in one sentence, then check which existing material supports it.
- 3.Count your existing references and identify which section is thinnest.
- 4.Search only for what is missing, rather than starting the search again.
- 5.Check that any figure carried from Task 1 is still current before reusing it.
Reference shortlist
These are authoritative starting points, not a ready-made bibliography. A qualified reviewer must confirm that each source fits the assignment and supports the claim beside which it is cited.
Nothing here is cleared for citation until you have read it.
- 01
Environmental evidence in action: on the science and practice of evidence synthesis and evidence-based decision-making
Environmental Evidence · 2023
How separate pieces of evidence are synthesised into a single conclusion, which is exactly the move Part 4 asks you to make with your own material.
- 02
Time lags in environmental governance: A critical review
PubMed Central · 2025
A strong closing citation if your conclusion argues for action sooner, because it quantifies what waiting has historically cost.
- 03
Framing Environmental Health Decision-Making: The Struggle over Cumulative Impacts Policy
PubMed Central · 2021
Shows two sides working from the same evidence, which is useful if your report has to explain why the disagreement persists rather than simply declaring a winner.
- 04
Climate Change - NASA Science
NASA · 2025
A reliable source for current global figures if your issue needs a wider reference point, and a way to check that data carried from Task 1 has not been superseded.
Review before submission
Common mistakes
- Pasting the three earlier parts together with their original introductions.
- Describing the issue three times, once per source submission.
- Presenting the same position throughout with no account of what the opposing evidence did.
- Clustering five of the six references in the supporting section.
- Placing the rebuttal far from the opposing case it answers.
- Leaving tense and voice inconsistent across sections written weeks apart.
- Keeping three separate reference lists.
- Drafting somewhere that cannot export a Word document for Turnitin.
Submission checklist
- There is one introduction and one conclusion.
- The issue is described once.
- A thesis appears early and reflects the final position.
- The movement of the position, or its absence, is explained.
- Six or more references appear, distributed across sections.
- The rebuttal directly follows the opposing case.
- Tense and voice are consistent throughout.
- The reference list is unified and in GCU Style Guide format.
- Word count is at least 1,000 to 1,250 and the file is a Word document.
Use this guide to plan and review your own work. Follow your institution's rules and read our academic-integrity policy.

Written by
Aaron Bishop
MA, Education
assignment interpretation and research-methods coaching across disciplines
Aaron leads the EssayCrackers editorial desk. He works on how assignment briefs are read — what a rubric is actually asking for, and where students most often answer a different question than the one set.

Reviewed by
Dr. Nathan Cole
PhD, Rhetoric & Composition
Argumentation and thesis development
Nathan teaches first-year composition and directs a university writing center. He reviews EssayCrackers guides for argumentative soundness and citation accuracy.