Biocenosis – a community of all organisms belonging to one ecosystem Student activity Play

Biogeochemical cycle in the food chain Slideshow Play

Chemical energy – the energy of chemical bonds Student activity Play

Ecological pyramids Student activity Play

Energy flow and food chains Student activity Play

Energy in a food chain Student activity Play

Energy loss Slideshow Play

Energy losses in a food chain Slideshow Play

Examples of ecological pyramids Slideshow Play

Flow of energy through the components of an ecosystem Simulation Play

Food chain Student activity Play

Food chains in nature Slideshow Play

Food webs Animation Play

Food webs Student activity Play

Functioning of an ecosystem Student activity Play

Functioning of an ecosystem Whiteboard exercise Play

Layers of the ocean Animation Play

Lymphocytes; the producers of antibodies and killers of pathogenic factors Student activity Play

Lymphocytes; the producers of antibodies and killers of pathogenic factors Animation Play

Phosphorus circulation in the environment Illustration Play

Phosphorus cycle Student activity Play

Primary and secondary data Student activity Play

Producers Slideshow Play

Producers and consumers Whiteboard exercise Play

Producers and consumers Student activity Play