Coral Reefs
Grasslands
Oceans
Rivers
Mammals
100

4,000 species of this live on reefs.

What are fish?
100

Grasslands cover ___% of Earth's surface area?

25%

100

The deepest point in the ocean.

What is the Mariana Trench?

100

The world's longest river.

What is the Nile River?

100

These mammals nurse their young with milk.

What are all mammals?
200

T or F?: Corals are plants.

False

200

Two basic types of grassland

What are temperate and tropical grasslands?

200

This % of Earth is covered by the ocean.

~70%

200

The world's highest waterfall is on this continent.

What is South America?
200

T/F: All mammals have four-chambered hearts.

True

300

When water is too warm, corals will expel the algae (zooxanthellae) living in their tissues causing the coral to turn completely white.

What is coral bleaching?

300

This % of American prairies remain.

2%

300

The most remote point in the ocean.

What is Point Nemo?

300
T/F: Rivers can be underground.

True

300

A mammal of an order whose members are born incompletely developed and are typically carried and suckled in a pouch on the mother's belly.

What is a marsupial?
400

By 2100, optimal coral reef coral reef habitat does NOT include this location, which is the most famous place to spot coral.

What is the Great Barrier Reef?
400
The most common type of mammal in grasslands of North America.
What are bison?
400

The time life on Earth was restricted to the ocean.

What is 3 billion years?

400

Considered the Holy River.

What is The River Ganga?

400

The biggest mammal.

What is the blue whale?

500

Corals eat these to survive.

What are plankton?

500

The most famous inhabitant of American prairies.

What is the bald eagle?

500

This % of the ocean floor has been mapped.

What is 5%?
500

The river that birthed the Indus Valley civilization.

What is the Indus River?

500

The group of mammals which platypus belong to.

What are monotremes?

M
e
n
u