1. Antarctica is important.

Antarctica holds 70% of the world's fresh water supply and 90% of the ice.

2.Gravity is not constant.

Some parts of the world have less gravity than others. Canada's Hudson Bay has less land mass, so there is less gravity there.

3. The deepest valley is underwater.

Mariana's Trench is 7 miles deep, below the ocean floor.

4. Fungus is the world's largest living organism.

The largest single living thing is the honey fungus. It covers 2.4 square miles and has been around for thousands of years.

Bet you didnt know huhn...?

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