"For one, loggers cut down forests. Also, land is cleared for agriculture. There are large companies that develop plantations and cattle ranches. There are also small-scale farmers.They depend on agriculture to feed their families."
Hahaha fish checks lollipop on
The purpose of this piece of text is to inform the reader. I reckon that the source is from the Declaration Of Independence.
If you are looking for a sentence in that paragraph to support the main idea, I think it would be "All it requires is a good pair of sneakers-no cables, stylish outfits, or weights required. The main idea is basically that walking is a good and easy way to begin exercising, and that explains it.