BIO 220 final report Task 2: opposing position guide
State the opposing case in its strongest form, not its weakest. A rebuttal to an argument nobody makes is worth nothing, and it is obvious to a marker.
Editorial process
Last reviewed · August 10, 2026
What does Task 2 of the final report require?
Task 2 adds two new elements to what you produced in Task 1, and they are graded separately. State the opposing position on the issue in one to two paragraphs, and state your rebuttals to that position in one to two paragraphs. Everything else in the instructions is either carried forward from Task 1 or is housekeeping. Notice the plural in rebuttals: you are expected to answer more than one opposing argument, which means the opposing section needs to contain more than one. Plan the two sections as a matched pair, so that every argument you set out on the other side has a response, and the reader can see which rebuttal answers which claim. Two opposing arguments and two rebuttals is the minimum that satisfies the plural, and three of each is comfortably within one to two paragraphs if each is stated in a sentence or two.
The single thing that decides your mark here is how honestly you state the opposition. There is a strong temptation to present the weakest version of the other side, because it is easier to knock down, and it is immediately visible to anyone who knows the topic. A rebuttal to an argument nobody actually makes proves nothing. So find the best version: what does the most credible person on the other side say, and what is their strongest evidence? If the opposing case rests on cost, give the figure. If it rests on livelihoods, name whose. If it rests on scientific uncertainty, say what specifically is uncertain rather than dismissing uncertainty as an excuse. A strongly stated opposition makes your rebuttal worth reading, and it is what the assignment is training. The habit has a name outside the classroom too: an argument you can only defeat in its weakest form is one you have not actually engaged with, and readers notice the difference immediately.
Rebuttals come in a small number of shapes and knowing them makes this section much easier to write. You can dispute the evidence, by showing the opposing claim rests on data that is outdated, unrepresentative or contradicted by better studies. You can accept the evidence but dispute its weight, by agreeing that a cost is real while arguing that it is smaller than the harm avoided. You can dispute the framing, by showing the choice is not the binary the opposition presents. Or you can accept the point and narrow your own position, which is a legitimate and often the most honest move. Say which kind of rebuttal you are making in each case, because a reader who can see the structure will follow the argument without having to reconstruct it. It also stops the section drifting into repetition of your original position, which is the commonest thing to find in a weak rebuttal.
The instruction about revision is easy to miss and it tells you something about how this report works. Task 2 is similar to Task 1, but revisions should be made based on feedback comments and proofreading. That means you are not submitting a standalone Task 2; you are submitting an improved version of Task 1 with Task 2 added to it. Go back through the returned Task 1, act on every comment, and fix anything you noticed yourself. Markers who left comments on the first submission will look for them, and a repeated error that was flagged the first time costs more than the same error made once. Treat the comments as a checklist and tick them off, because the marker who wrote them almost certainly has the earlier version open beside your new one.
On sources, the brief asks for one or more articles that oppose your position, and one is the minimum rather than the target. Two or three is safer for a simple reason: a single opposing article makes it easy to argue that you found the one outlier, and it gives you only one line of argument to rebut when the instruction asks for rebuttals in the plural. Look for opposing material of a different type from your Task 1 sources, since an industry or agency perspective often carries the practical objections that peer-reviewed work does not address. Keep everything you find, because the final part of this report requires a minimum of six references and you are accumulating them now rather than at the end. A source you discard today because it is not quite right for Task 2 may be exactly what the synthesis needs later.
Two mechanical points. The reference list goes at the end and follows the GCU Style Guide rather than APA, and by this task the list should contain your Task 1 sources and your new opposing ones together, correctly formatted as one list. And review the grading rubric before you begin, as the brief says, because the rubric describes the finished report rather than this instalment, and reading it now will show you which parts of Task 2 carry the most weight. In most versions of this rubric the rebuttal section is worth more than the description of the opposing view, which is worth knowing before you allocate your paragraphs, since the two sections are allowed the same length but are not worth the same number of marks. Write the opposing section efficiently and spend your effort on the answers to it.
Likely learning objectives
Inferred from the brief — check these against your own rubric.
- 01State the opposing case in its strongest available form.
- 02Match each rebuttal to a specific opposing argument.
- 03Distinguish the different kinds of rebuttal and name which you are using.
- 04Treat the task as a revision of Task 1 with new sections added.
- 05Find more than one opposing article, and of a different source type.
- 06Maintain a single reference list in the required style.
Read the full question
Review every instruction before using the planning guidance that follows.
What is new, and what carries forward
- 01A brief description of the environmental issue, carried forward from Task 1.
- 02Revisions to Task 1 based on feedback comments and proofreading.
- 03The opposing position on the issue, in one to two paragraphs.
- 04Your rebuttals to the opposing position, in one to two paragraphs.
- 05One or more articles that oppose your position.
- 06A reference list at the end of the report, in GCU Style Guide format.
Revision, opposition, rebuttal, references
The revised description
Carry forward the issue description, improved in line with the feedback on Task 1.
The opposing position
Set out at least two arguments against your position, at their strongest, with the evidence each rests on.
The rebuttals
Answer each opposing argument in turn, saying whether you dispute the evidence, its weight, or the framing.
Any narrowing of your position
If the opposing evidence has changed your view, say so and state the revised position.
The reference list
Combine supporting and opposing sources into one GCU Style Guide list at the end.
Finding credible opposing material
Recommended databases
- The same databases used in Task 1, searched with the opposite framing
- Trade and industry publications, which carry practical and cost objections
- Agency consultation responses, where opposing parties state their case formally
- Local reporting on your issue, which usually quotes both sides directly
Search sequence
- 1.Re-read the feedback on Task 1 and list the changes it requires before doing anything else.
- 2.Search using the opposing framing rather than your own, since search terms carry a position.
- 3.Identify who the most credible opponents are and find what they actually published.
- 4.Extract two or three distinct opposing arguments, each with its own evidence.
- 5.For each, decide which kind of rebuttal you can make, and check the evidence for it exists.
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 competing evidence is weighed rather than counted. Useful for rebuttals that accept the opposing evidence but dispute its weight.
- 02
Mind the gap: Coping with delay in environmental governance
Science · 2020
Sets out how scientific uncertainty is used in environmental disputes, which helps you answer an uncertainty objection precisely rather than dismissing it.
- 03
Framing Environmental Health Decision-Making: The Struggle over Cumulative Impacts Policy
PubMed Central · 2021
A worked example of two sides framing the same evidence differently, which is the model for a rebuttal that disputes the framing rather than the facts.
- 04
Time lags in environmental governance: A critical review
PubMed Central · 2025
Quantifies how long action takes after evidence appears, which is a strong rebuttal to the argument that more study should precede any decision.
Review before submission
Common mistakes
- Presenting a weak version of the opposing case so it is easier to answer.
- Writing one rebuttal when the instruction asks for rebuttals.
- Leaving the opposing arguments and the rebuttals unmatched, so the reader cannot pair them.
- Submitting Task 2 without revising Task 1 as instructed.
- Relying on a single opposing article.
- Choosing an opposing source of the same type as all your supporting ones.
- Keeping two separate reference lists instead of one.
- Dismissing scientific uncertainty rather than saying what is uncertain.
Submission checklist
- Task 1 has been revised in response to feedback.
- The opposing position contains at least two distinct arguments.
- Each opposing argument is stated at its strongest, with its evidence.
- Each rebuttal answers a named opposing argument.
- The kind of each rebuttal is identifiable.
- At least two opposing articles are cited.
- The reference list is unified and in GCU Style Guide format.
- The grading rubric has been reviewed before writing.
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.