Polemic: Industrial Tourism and the National Parks- Abbey

I think the audience is people who don't care about national parks and the purpose is to get them to care.
What kind of rhythm does the writer create? Is there a variety in the sentence structure?
The writer creates a funny yet serious rhythm. He establishes it early by cracking a couple of jokes but later makes some serious points. I like this because it makes you want to keep reading plus you are getting something out of it. The sentence structure is pretty normal. I basically just chose this question so I could write about the funny tone. There are a couple spots where it is not quite as normal. In the middle of the piece he lists five solutions to a question and he numbers a couple of paragraphs later.