CK-12 Foundation
Ck 12: Life Science: Photosynthesis
[Free Registration/Login may be required to access all resource tools.] Plants are producers, which means they are able to make their own food, as well as "food" for other organisms. Plants are also autotrophs - they collect energy from...
Biology Pages
Kimball's Biology Pages: Photosynthesis Role of Light
This site describes cellular components involved in light reaction and describes steps involved in photosynthesis.
Sophia Learning
Sophia: Autotrophs vs. Heterotrophs: Lesson 3
This lesson will review the difference between autotrophs and heterotrophs, and show how both play important roles in a food web. It is 3 of 4 in the series titled "Autotrophs vs. Heterotrophs."
Sophia Learning
Sophia: Producers and Consumers: Lesson 2
This lesson will review the difference between producers and consumers, and show how both play important roles in a food web. It is 2 of 4 in the series titled "Producers and Consumers."
Sophia Learning
Sophia: Food Webs
A short lesson explaining the "web of interactions" that occur in a food web. Understand how the energy flows between autotrophs and consumers. [0:35]
Science Struck
Science Struck: Food Chain in the Tundra Region
Describes the characteristics of a tundra biome, how a tundra food chain compares to a tropical food chain, and what the different trophic levels look like.