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100

Ground that is permanently frozen

What is permafrost?

100

The imaginary line that runs across the Earth and separates the northern hemisphere from the southern hemisphere

What is the equator?

100

An open boat made of animal skins and bones that can hold up to 20 people.

What is an umiak?

200

A person who trains and races sled dogs.

What is a musher?

200

Minimal activity; a deep sleep; characterized by low body-temperature, slow breathing, and slower heart rate; most commonly occurs during winter months.

What is hibernation?

200

To travel to distant places that are warmer.

What is migrate?

300

An animal that feeds on other animals.

What is a predator?

300

Very tiny green plants that grow in hot, damp places.

What is algae?

300

An animal who eats meat.

What is a carnivore?

400

A gradual increase in the overall temperature of the Earth’s atmosphere.

What is global warming?

400

To die out forever.

What is extinction?

400

Seriously at risk of extinction.

What is endangered?