Some mosses can survive complete desiccation for decades and return to life when moistened.

The Earth's tilt causes seasonal changes.

Mudslides can be triggered by heavy rainfall.

Coral reefs are built by tiny animals called coral polyps.

Some crystals can grow naturally.

The penguin’s dense feathers create a waterproof barrier.

Water is the only common substance on Earth that naturally exists in all three states — solid, liquid, and gas — at everyday temperatures.

Some volcanoes remain dormant for centuries before erupting.

Supercell storms are responsible for many tornadoes.