Coral reefs are important ocean habitats and offer a compelling case of the risks of climate change.

A rainforest is an area of tall, mostly evergreen trees and a high amount of rainfall.

Tundra is the coldest of all the biomes.

Deserts are areas that receive very little precipitation.

Tundra comes from the Finnish word tunturi, meaning treeless plain

Tundra comes from the Finnish word tunturi, meaning treeless plain

Reefs provide a large fraction of Earth’s biodiversity—they have been called “the rain forests of the seas.”

Scientists estimate that 25 percent of all marine species live in and around coral reefs, making them one of the most diverse habitats in the world.

Rainforests are Earth’s oldest living ecosystems, with some surviving in their present form for at least 70 million years. They are incredibly diverse and complex, home to more than half of the world’s plant and animal species

Rainforests are Earth’s oldest living ecosystems, with some surviving in their present form for at least 70 million years. They are incredibly diverse and complex, home to more than half of the world’s plant and animal species