"Searching for information is often nonlinear and iterative, requiring the evaluation of a range of information sources and the mental flexibility to pursue alternate avenues as new understanding develops." ACRL Framework for Information Literacy
First, it is important that you review your assignment guidelines. Are you required to use a specific number of sources? What kind of sources are can you use (books vs. journal articles vs. newspaper articles, for example)? How long is your paper? Are you presenting this research?
Second, identify your topic based on your assignment's guidelines. It's okay to start with a broad topic and narrow down as your do more research.
Third, identify databases to search based on your topic and what kind of sources you want to find.
Starting brainstorming your topic early on. If you already have a topic in mind, you can begin doing some preliminary searches to learn more about your topic. If you do not have a topic ready, you can look at newspapers (like Wall Street Journal) and popular science magazines (like Popular Science and Scientific American) to find current STEM topics.
image from: https://clark.libguides.com/brainstorming
Keeping track of you searches will help you stay organized and avoid repeating your searches. It helps you stay efficient with your time and provide a record of your work thus far. A search log can document date of when you searched, where you searched (what databases?), what terms you searched, any filters you used, number of results, and any notes or comments to yourself about what was successful or unsuccessful.
Identify the main ideas/nouns from your research question.
Brainstorm synonyms for these important terms.
economic: economics, cost, socio-economic
lab grown meat: plant based diet, plant based nutrition, meat alternatives
The main words you highlight along with their synonyms provide the foundation for what terms you should try searching.
You can also refine your search using any databases' filters. They are often a variety of ways to filter a search via refining the publication date, the format (article, book, conference proceeding, etc.), etc.