Excess nutrients contribute to river pollution

Human beings have an impact on river ecosystems. The relationship living organisms have with each other and with their environment...

These two practical activities help students to understand how nutrients are washed off the land and into water systems. They...

In this activity, students demonstrate how substances are dissolved and transported by water through the soil.

New Zealand has had a reputation for being ‘clean and green’ – a country of environmental beauty. Compared to many...