Natural - Unit 4

What is the ecosystem with flat areas and grazing animals?

• Tundra

• Rainforests

• Grassland

• Deserts

The tundra is....

• the coldest terrestial ecosystem.

• an aquatic ecosystem.

• the driest terrestial ecosystem.

• a typical ecosystem of Africa.

Rainforests are home to a great variety of species such as...

• Snakes, camels and lizards.

• Bears and foxes.

• Buffaloes and coyotes.

• Iguanas, monkeys and toucans.

Deserts are the driest regions in the world.

• True.

• False.

Mediterranean forests grow in...

• humid regions with cold winters.

• dry regions with warm summers.

What are aquatic ecosystems?

River is a...

• Freshwater ecosystem.

• Saltwater ecosystem.

Oceans and seas are the biggest aquatic ecosystem.

• True.

• False.

Bees obtain nectar from flowers and flowers are pollinated by bees. This is an example of...

• Parasitism.

• Predation.

• Commensalism.

• Mutualism.

Fleas bite dogs and feed on their blood. This is an example of...

• Competition.

• Parasitism.

• Predation.

• Commensalism.