Adaptations of the water-holding frog to drought conditions Animation Play

Biological safety Student activity Play

Biological safety of humans Slideshow Play

Crude oil Slideshow Play

Fossil fuels Student activity Play

How human activities change the natural environment Student activity Play

How humans affect the environment Slideshow Play

Long-term effects of human activities Slideshow Play

Population Student activity Play

Positive effects of mutations in somatic cells Slideshow Play

Survival Class activity Play

The effects of mutations in somatic cells Student activity Play

The greenhouse effect Student activity Play

The impact of the greenhouse effect Slideshow Play

Three factors affecting population size Illustration Play

To work with or against nature? Student activity Play