Curated OER
AP: Chapter 37: Plant Nutrition
Two pages of questions provide a brief overview of plant nutrition. Biology or botany brainiacs describe how plants absorb and transport nutrients, they explain the role of different bacteria, and they describe a variety of unusual...
BiologyWise
Biology Wise: Beneficial Bacteria
Discusses examples of probiotic bacteria that benefit the human body and some that help the environment.
PBS
Nh Pbs: Nature Works: Decomposers
This site gives a detailed overview of "decomposers": bacteria, fungi, and earthworms. Content includes a look at how decomposers contribute to a symbiotic relationship.