Environmental Science Concepts Assessment

The video covers the importance of natural resources, focusing on land, soil, water, and wildlife. It discusses land usage, soil formation, and conservation methods. Water scarcity and its uses are highlighted, along with the significance of natural vegetation and wildlife conservation. The video emphasizes the need for balance and sustainable practices to protect these resources.

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

• 20%

• 30%

• 50%

• 70%

Which of the following is NOT a factor that affects soil formation?

• Climate

• Relief

• Parent rock

• Population density

What is the primary purpose of mulching in soil conservation?

• To enhance soil color

• To increase soil temperature

• To retain soil moisture

• To prevent soil compaction

Which layer of soil contains humus?

• Parent rock

• Topsoil

• Subsoil

• Weathered rock

What percentage of Earth's water is fresh and drinkable?

• 25%

• 1%

• 2.7%

• 10%

What is the biosphere?

• A type of forest

• A layer of soil

• A sphere where land, water, and air interact

• A type of ecosystem

Which of the following is NOT a type of natural vegetation?

• Tundra

• Desert

• Grassland

• Forest

What is the main reason for the decrease in tree size as we move towards the poles?

• Lack of sunlight

• Lack of moisture

• High temperatures

• High wind speeds

Which of the following is a major threat to wildlife conservation?

• Urbanization

• Reforestation

• National parks

• Wildlife sanctuaries

What is the primary goal of establishing national parks?

• To develop urban areas

• To increase agricultural land

• To conserve natural vegetation and wildlife

• To promote tourism