ClassFlow
Class Flow: What Animals Eat
[Free Registration/Login Required] To show the dependence of animals on the plant world, these flipchart pages contain examples of food chains and food webs, as well as other information about animals and habitats.
BiologyWise
Biology Wise: Importance of Photosynthesis
Explains what the products of photosynthesis are, how we depend on this process for the oxygen we breathe, how it maintains the balance between carbon dioxide and oxygen in the environment, and how it supports all other living organisms...