Biomes Exam Revision

What percentage of all known plant and animal species are found in tropical rainforests?

• 25%

• 50%

• 75%

• 90%

What role do forests play in regulating the global climate?

• They reflect energy from the sun back into the atmosphere.

• They absorb and use energy from the sun.

• They increase the amount of carbon in the atmosphere.

• They decrease the amount of oxygen in the atmosphere.

What are deserts generally characterized by?

• High rainfall and moderate temperatures

• Low rainfall and temperature extremes

• High vegetation and mild temperatures

• Constant temperatures and high humidity

What type of animals are most commonly found in deserts?

• Diurnal animals

• Aquatic animals

• Nocturnal animals

• Arboreal animals

What happens to desert rain often before it hits the ground?

• It turns into snow

• It evaporates

• It forms rivers

• It causes floods

Which of the following is NOT true about deserts?

• All deserts are hot

• Deserts can have temperature extremes

• Desert vegetation is sparse

• Deserts can teem with life after heavy rain

Which of the following is an example of a cold desert?

• Sahara Desert

• Kalahari Desert

• Gobi Desert

• Arabian Desert

Approximately how many people around the world live in desert regions?

• 100 million

• 200 million

• 300 million

• 400 million

What are grasslands mainly inhabited by?

• Aquatic animals

• Grazing animals, reptiles, and ground-nesting birds

• Large predators

• Insects and amphibians

What is a significant risk to grasslands due to overgrazing?

• Becoming forests

• Becoming deserts

• Becoming wetlands

• Becoming mountains