How could you best use your knowledge of fishing practices to develop a sustainable fishing business? describe sustainable fishing practices, including techniques to use and techniques to avoid.

Well, if you don't know how to fish then why would you start a business. one thing you can do is when you swing the fish pole keep holding the button, one that you don't want to use is don't get it hooked on the someones mouth 

In my opinion

Mass extinctions happen because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes. One famous mass extinction event is the one that lead to the extinction of dinosaurs, 65 million years ago.
I hope it’s help