CK-12 Foundation
Ck 12: Biology: Interdependence of Living Things
[Free Registration/Login may be required to access all resource tools.] Covers interactions between organisms.
CK-12 Foundation
Ck 12: Biology: Symbiosis
[Free Registration/Login may be required to access all resource tools.] Overview of symbiotic relationships.
CommonLit
Common Lit: "Can't We All Just Get Along?" by Bird Brain Science
Earth is full of a variety of living things that interact with one another in many different ways. This informational text explains the various different types of relationships they can have with one another. It also offers guided...
CK-12 Foundation
Ck 12: Life Science: 12.9 Symbiosis
Learn about the many types of symbiotic relationships in an ecosystem.
Science Education Resource Center at Carleton College
Serc: Mn Step: The Flow of Energy: Balancing Ecosystems
A lesson outlining activities for a science unit where students can learn about the relationships and the flow of energy within an ecosystem. These include predator and prey, hosts and parasites, and consumers, producers, and decomposers.
PBS
Pbs Teachers: Volcanoes of the Deep
Discuss how individual organisms and groups of organisms interact with each other, and research and classify symbiotic relationships between individual organisms of different species.
Science Struck
Science Struck: Symbiotic Relationships in the Desert
Describes three types of symbiotic relationships that can be found in a desert biome.
Biology 4 kids
Biology4 Kids: Relationships Between Organisms
Species interact every day. That interaction is a vital part of how organisms develop and change over time. When you study species, it is important to watch the way they interact with their surroundings. There are four basic types of...
CK-12 Foundation
Ck 12: Biology: Roundworms
[Free Registration/Login may be required to access all resource tools.] Discusses characteristics of roundworms.
Earth Life
The Wonderful World of Insects
Everything you ever wanted to know about your favorite arthropod, the millipede! The site has pictures, information, world records, etc.