Online College Courses for Credit

The Carbon Cycle

The Carbon Cycle

Author: Mike Farrell

(45 min. for two or three days)

  • Learn about the carbon cycle in detail.
  • Take notes as you go. Or you can learn for 25 minutes by viewing and reading, and then go back to what you have studied for the final 20 minutes to write notes and draw pictures.
  • Study another cycle if you finish studying the carbon cycle.
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Fast, Free College Credit

Developing Effective Teams

Let's Ride
*No strings attached. This college course is 100% free and is worth 1 semester credit.

29 Sophia partners guarantee credit transfer.

314 Institutions have accepted or given pre-approval for credit transfer.

* The American Council on Education's College Credit Recommendation Service (ACE Credit®) has evaluated and recommended college credit for 27 of Sophia’s online courses. Many different colleges and universities consider ACE CREDIT recommendations in determining the applicability to their course and degree programs.