Chemical energy – the energy of chemical bonds Whiteboard exercise Play

Chemical pollution – nutrients Student activity Play

Chemical pollution – pesticides and other poisons Student activity Play

Chemical preservation of food Student activity Play

Chemical preservation of food Whiteboard exercise Play

Comparison of types of food and the structure of the alimentary canal in herbivores and carnivores Illustration Play

Competition among warblers Animation Play

Competition between organisms Slideshow Play

Competition – 1:0 win Student activity Play

Competition – 1:1 draw Student activity Play

Composition of the Red Deer's diet over the year Illustration Play

Conservation of natural resources Whiteboard presentation Play

Conservation of natural resources Class activity Play

Controlling the temperature of the reaction Animation Play

Critical mass Student activity Play

Critical mass Glossary Play

Dangerous spores Student activity Play

Dangerous spores Whiteboard exercise Play

DDT – a persistent insecticide Animation Play

DDT – a persisting insecticide Slideshow Play

Decomposers Animation Play

Determination of enthalpy change in combustion reactions (2) Student activity Play

Development - cities Whiteboard exercise Play

Development - food Slideshow Play

Development of the embryo Student activity Play