Amazon Rainforest and Its Impact on Weather

What percentage of South America is covered by the Amazon rainforest?

• 20%

• 30%

• 40%

• 50%

What is the Amazon's 'river in the sky' primarily composed of?

• Clouds

• Water vapor from trees

• Dust particles

• Rain seeds

What is the main reason the Amazon rainforest is often obscured by clouds?

• Frequent storms

• High humidity

• Water vapor from trees

• Proximity to the ocean

What is necessary for water molecules to form raindrops?

• High temperature

• Impurities

• Strong winds

• Sunlight

What percentage of the Amazon's rain seeds are produced by its trees and plants?

• 85%

• 50%

• 95%

• 70%

What is the role of biogenic volatile organic compounds in the Amazon?

• They act as H2O magnets

• They provide nutrients to the soil

• They increase sunlight absorption

• They repel insects

How do trees in the Amazon influence rain patterns when they need more rain?

• By growing taller

• By releasing more rain-attracting chemicals

• By absorbing more sunlight

• By shedding leaves

How does pollution affect rain patterns in the US compared to a few hundred years ago?

• It increases rain

• It causes more storms

• It decreases rain

• It has no effect

What is the Amazon rainforest often referred to as?

• The backbone of the planet

• The heart of the planet

• The brain of the planet

• The lungs of the planet

What percentage of water reaching the atmosphere over continents is attributed to trees globally?

• 70%

• 90%

• 50%

• 100%