Prairie Ecosystem and Grasslands

The video explores Earth's grasslands, known as pampas, savannas, steps, and prairies. It describes the grassland ecosystem, highlighting its biodiversity and the role of bison. The formation of prairies is explained through geological and climatic events. The video also discusses the impact of fire on prairie ecosystems, emphasizing its role in renewal and maintaining biodiversity.

What percentage of Earth's land surface is covered by grasslands?

• 40%

• 60%

• 10%

• 20%

Which of the following is NOT a name for grasslands in different regions?

• Pampas

• Savannas

• Steppes

• Tundras

What type of ecosystem is a grassland?

• Aquatic

• Community of plants and animals

• Forest

• Desert

Which animal was nearly wiped out by hunters in the late 1800s?

• Bison

• Rattlesnake

• Deer

• Coyote

How were the prairies formed?

• By volcanic eruptions

• By tectonic plate movements and climatic changes

• By human intervention

• By ocean currents

What role did glaciers play in the formation of the prairies?

• They formed large lakes

• They caused volcanic eruptions

• They created mountain ranges

• They melted and deposited sediments

What is the average annual rainfall in the prairies?

• 20-35 inches

• 10-15 inches

• 40-50 inches

• 60-70 inches

What natural events are common in the prairies?

• Volcanic eruptions

• Earthquakes

• Tornadoes

• Tsunamis

How do fires benefit the prairie ecosystem?

• They increase soil erosion

• They promote new plant growth

• They prevent animal growth

• They destroy all vegetation

What happens to the prairie ecosystem after a fire?

• Animals leave permanently

• New growth appears quickly

• It takes years to recover

• It becomes barren