Chapter $8$ pattern is problem solution organizational pattern, which in this instance would be Joe displaying the problem and the simple solution. Chapter $10$ is cause and effect organizational pattern; once again, the cause is how much we waste, what it does to our environment, and how we can improve.

The process involves identifying the problem, gathering information, analyzing the information, and proposing a solution. Joe started out with a staggering fact, then explained and provided a simple solution.

Chapter $8,$ step $1.$ Identify the problem

in step $2.$ Gather information

in step $3.$ Analyze the information

in step $4.$ Solution

Chapter $10.$ Step $1.$ Identify the cause

in step $2.$ Describe the cause

Step $3.$ Solution

Chapter $8\text{'}$s advantages are that it's straightforward and easy to do$,$ and the disadvantage is that it doesn't work in every situation.

Chapter $10\text{'}$s advantages are pretty much the same as those of Chapter $8.$