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BIOL 104K Ecosystem Conservation and Human Society

Type of sources

Sources by Audience


Think about the target audience for your sources (click the green arrows to see more):






Sources by origin, content and intended use:


Think about how the sources were created and for what purpose (click the green arrows to see more):







Evaluate all your sources carefully

Information becomes less accurate the farther away you go from the original or primary source, becuase each new author adds his/her own interpretation.

Click on the cartoon below to understand better:

The Science News Cycle

Life-cycle of scientific information

Primary VS Secondary Articles

Primary and Secondary Sources

Use this guide to differentiate between Primary and Secondary sources: 

Scholarly and Popular Sources