Practice: Can you correctly identify the pattern of organization used in each of the following sets of main points?
I.  The first area in the recycling plant is the collection room.
II. Beyond the collection room we come to the sorting area.
III.  Conveyer belts from the sorting area take like materials to the processing facilities.
IV.  From the processing facilities, the processed raw materials are shipped to manufacturers.
This is spatial; it moves the listener from room to room.  A speaker would use good connectives and perhaps a visual aid to emphasize this physical movement.

I. Recycling has its roots in pioneer culture.
II. Modern recycling efforts emerged in the 1970s with the rise of environmentalism.
III. Today, recycling has become a multimillion dollar industry.
This is chronological; it moves from past to present.

I.  Communities are turning to municipal recycling programs for various reasons.
II. The effects of municipal recycling programs include reduced use of landfills and reduced pollution.
This is causal; it is moving from causes to effects and the speaker would be focusing essentially on the benefits of recycling programs.

I. The United States faces a serious landfill crisis.
II.  The United State's landfill crisis can be met by the adoption of mandatory recycling programs.
This is problem-solution; it would be persuasive in intent as it would have to prove the seriousness of the problem and then show that the solution will work and should be adopted.

I. One way to recycle is to reduce your use of packaging.
II. Another way to recycle is to reuse materials whenever possible.
III.  A final way to recycle is to collect and turn in used materials that can be remanufactured into new material.
This is simply topical--listing three things you can do to recycle.

I. One cause of the Civil War was the economic disparity between North and South.

II. A second cause of the Civil War was the disparity in ideas about the nature of the federal government.

III. A third cause of the Civil War was the institution of slavery.
This is topical.  It is not causal because it has more than two points and the points are not dealing with causes and effects.