Just as you listed keywords related to your topic, make a list of the people or organizations who are stakeholders on your issue. Searching their websites might yield valuable information, but beware of bias!
If your professor says that you may use Internet sources, it's up to you to evaluate whether the websites are acceptable for academic research.
These domains will be more likely to contain reliable information:
.gov = government sites which often have statistics and articles produced with funding from your tax dollars. These are not free of bias, depending on those currently managing the site.
.edu = educational institutions. Level of expertise is uneven ranging from the latest paper of a PhD in Organizational Behavior to a book report by a 9th grader.
.org = organizations, sometimes professional organizations. Many have articles and links to work done in their group.
Here's a Google search tip: add site:. and the domain name of a trusted site. Example: "air pollution" site:.epa.gov
Uing the Internet for academic purposes is far different than seeking entertainment or commercial websites. For a site to be acceptable on assignments, be sure it passes the test in each of these areas.
Accurate numbers can be very persuasive in a speech or paper. Check out these federal portals for all kinds of information:
Use the topical drop down box on the right or browse the Topics A-Z link.
Tables and reports based on census data and organized by many topics.
Use the American FactFinder to extract info from 2010 census data..