Atmosphere and Hydrosphere

Did you know that too much carbon dioxide in the classroom can affect your body, and even your grades?

Humidity is an important part of life on Earth and life in space. This backgrounder explains what humidity is, how it is measured and how it affects us both mentally and physically.

Learn about how craters are formed and about some of Canada's impact craters.

14 images of some fish such as lion fish, grouper and sharks that live in saltwater environments like oceans, saltwater lakes and aquariums

4 images of some fish such as koi that live in freshwater river and lake environments and in freshwater aquariums and garden ponds

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

5 images of some work related to the scientific study of climate such as using instruments to measure changes in climates

4 images of some work that a meteorologist might do such as forecasting the weather and analyzing clouds