What is this?
Glacier
What is this?
Polar bear
What is this?
Stream
What is this?
Rainforest
What is this?
fossil fuel
What is this?
Cave
What is this?
Cliff
What is this?
Walrus
What is this?
Whale
What is this?
Solar energy
What is this?
Seal
What is this?
Penguin
What is this?
Coral reef
What is this?
Orca
Why the sea ice is disappearing?
Oceans are warming
What is this?
Ocean
What is this?
Mountain