1. How will we be able to capture more insects, because ive noticed that we have been catching fewer insects
Generating initial questions
You now have a specific phenomenon you'd like to study, but why do you want to study it? At this point you'll want to start listing questions you have around this particular phenomenon so you can get an idea of the information you'll need to get started, and to generate a testable hypothesis.
Using geospatial variations in the concentration of atmospheric carbon dioxide here are some example questions:
1. Which areas in Los Angeles have the highest consistent levels of carbon dioxide in air?
2. How do these levels fluctuate over the course of a year?
3. Does the amount of green space in a neighborhood impact this level?
You'll want to generate a number of these questions so as to better define your project, and to guide you towards a testable hypothesis.