Definition: The Earth's system that contains all living things on Earth, such as plants and animals

Meaning: The system that contains the air we breathe, the layers that protect us from harmful radiation and the system that creates clouds and weather.

Meaning: The system that contains all the water in the world that is not frozen, which contains millions of animals and bacteria

The system that contains all the ice in the world, such as Antarctica and the Arctic

The system that contains all the rocks and other hard minerals/elements in our world