Nitrogen Cycle

Discover a set of resources curated to get you ready to discuss sustainable agriculture and food security.

Learn how vehicles affect air quality, including their contribution to smog.

Acid rain is any precipitation that has an unusually low pH. It can be rain, snow, fog, etc. But what is a low pH and why is this a problem?

This backgrounder explains what greenhouse gases are and how they contribute to climate change.

What is the nitrogen cycle? How do human activities such as using fertilizer affect the nitrogen cycle? How can this cause greenhouse gases?

The ocean is full of very small but very useful creatures called microbes. Without them, none of the sea plants or animals you’ve seen would exist!

When fertilizers from agriculture get into lakes and rivers, big problems can result for aquatic ecosystems, food chains & webs!