The Role of Trees in Our Environment

Trees and forests play a crucial role in maintaining air quality by producing oxygen, reducing air pollution, and preventing dust storms. They act as natural air purifiers, absorbing harmful pollutants and converting them into non-harmful compounds. Trees also help reduce humid haze by releasing water vapor and bacteria that form clouds, which then rain down pollutants. Replanting trees is essential to restore ecosystems and combat climate change. The video encourages viewers to participate in tree-planting campaigns to improve global air quality.

What is one of the primary roles of trees in our environment?

• Producing carbon dioxide

• Increasing air pollution

• Absorbing oxygen

• Cleaning the air

How do trees contribute to oxygen levels in the atmosphere?

• By releasing oxygen as a byproduct

• By absorbing oxygen

• By releasing carbon dioxide

• By producing carbohydrates

Why are rainforests often referred to as the 'lungs of the earth'?

• They absorb all the world's carbon dioxide

• They produce a significant amount of the world's oxygen

• They cover the largest area of the earth

• They are home to many animal species

Which of the following pollutants do trees help to absorb?

• Argon

• Ground-level ozone

• Methane

• Helium

How do trees help in reducing humid haze?

• By absorbing water particles

• By releasing water vapor and bacteria

• By blocking sunlight

• By increasing air temperature

What environmental issue can be mitigated by planting trees in areas with exposed soil?

• Flooding

• Dust storms

• Earthquakes

• Volcanic eruptions

What is the estimated loss of original tree cover according to scientists?

• Half

• Three quarters

• One quarter

• One third

What is the main goal of the Etrian campaign mentioned in the video?

• To plant trees and reduce air pollution

• To promote animal conservation

• To increase urban development

• To reduce water pollution

How much does it cost to fund the planting of a tree every day for a year?

• $1 a month

• $3 a month

• $5 a month

• $10 a month

What is the 30-day tree challenge aiming to achieve?

• To plant trees in urban areas only

• To inspire people to plant trees and involve others

• To cut down old trees

• To replace trees with artificial ones