Join the Amoeba Sisters in this longer review video as they review food chains, food webs, how energy flows through trophic levels (including the 10% rule), ecological relationships (including parasitism, mutualism, and commensalism),...

Join the Amoeba Sisters as they take a brisk "stroll" through their biology playlist! This review video can refresh your memory of major concepts, help you identify what you need to re-study, and reinforce vocab. Expand these details for...

A journey through a marine food chain, from tiny plankton to the ocean's giants. Biology - Ecosystems - Learning Points. Phytoplankton are the basis of the oceanic food chain. In the Pacific Ocean, millions of herring feed on these...

This video covers:

- The idea that trophic levels are just the different levels of a food
chain
- Trophic level 1 are called the
producers
- Trophic level 2 are primary consumers, trophic level 3 are called the...

The video “Energy in an Ecosystem” discusses the complex relationship between organisms in an ecosystem, focusing on how small changes can have a large impact.

The video discusses the concept of a community in an ecosystem and the levels of organization within it. It covers the role of photosynthetic organisms in producing biomass, the different types of consumers (primary, secondary, and...

The video discusses the important ecological concepts of trophic levels and biomass. The video provides an example of a food chain, from grass plants as producers to apex predators that have no predators of their own. The video explains...

This is a lecture presentation on feeding relationships in ecosystems. The presenter discusses the interdependence of different organisms in a community and the consequences of a change in that community. Using a specific community as an...

It explains the unidirectional flow of energy through different trophic levels; energy flow maintained by laws of thermodynamics, food web, food chain and the ten percent law.