Earth Systems: Understandings of the living world, Earth, and space are deepened by investigating natural systems and their interactions.

Make a model of the water cycle and find out how water moves around on planet Earth.

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

Scientists can observe birds to get useful information about the health of, and changes in, an ecosystem.

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

12 images of some birds such as seagulls, puffins, ducks and Canada Geese that live on or around freshwater or saltwater habitats