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CK-12 Foundation
Symbiosis: Mutualism, Commensalism, and Parasitism
Hyenas normally hunt alone, however scientists discovered that in Israel, hyenas hunt with wolf packs. When relationships develop between different species, we call it symbiosis. The videos teach about the three types of symbiosis and an...
NOAA
Chemosynthesis and Hydrothermal Vent Life
What's life like in a hydrothermal vent? Find out in part five of a 13-part series. Learners journey to one of the harshest environments on the planet, the hydrothermal vent, to learn about the creatures that survive the extreme...
Cold Spring Harbor Laboratory
Higher Cells Incorporate an Ancient Chromosome
Chromosomes contain keys to history including links from royalty to Neanderthals. Young scientists learn about Ivan Wallin's research into chromosomes with an animation and videos. Then, the concept connects to mysteries related to...
Howard Hughes Medical Institute
Deep History of Life on Earth
Take it all the way back! Young scientists discover the changes that took place from the time Earth became solid to present day through an interesting interactive. The resource guides users through key events that have shaped our world...
University of Nebraska
University of Nebraska State Museum: Brazil Nut Tree Community
Investigate the numerous symbiotic relationships that exist between the Brazilian Nut Tree and six other organisms in its community.
University of Nebraska
University of Nebraska State Museum: Parasite Sleuth: Where Parasites Live
This site highlights 10 parasites, including worms, insects, ticks and microorganisms. For each organism you can get information concerning their life cycle and geographic distribution.