Soil: The Hidden Wonder

Soil is a vital yet often overlooked component of our ecosystem, teeming with microorganisms and playing a crucial role in medicine through antibiotics. Earthworms and fungi contribute significantly to soil health and plant growth. Despite its importance, soil is under threat from human activities, leading to degradation and carbon loss. Protecting soil is essential for maintaining biodiversity and ecosystem services.

How many species of microorganisms can be found in a single gram of soil?

• 50,000

• 500,000

• 10,000

• 100,000

What is the comparison made between the number of microorganisms in a teaspoon of soil and the human population?

• More microorganisms than people on Earth

• Equal number of microorganisms and people

• Fewer microorganisms than people on Earth

• Twice as many microorganisms as people

What do microorganisms in the soil produce that is beneficial to humans?

• Enzymes

• Minerals

• Antibiotic compounds

• Vitamins

Which creature did Darwin find fascinating due to its role in soil formation?

• Beetles

• Ants

• Termites

• Earthworms

What do fungi provide to plants in exchange for carbon?

• Sunlight

• Water

• Oxygen

• Nutrients like nitrogen and phosphorus

How long does it take to build just 5 millimeters of soil?

• 10 years

• 200 years

• 50 years

• 100 years

Where is the oldest soil on Earth thought to be located?

• Australia

• South Africa

• North America

• Asia

How much more carbon does soil store compared to all the plants on Earth combined?

• Three times as much

• Five times as much

• Four times as much

• Twice as much

What percentage of soils in Europe are thought to be unhealthy?

• 60-70%

• 50-60%

• 30-40%

• 70-80%

What is one of the main problems causing soil degradation?

• Deforestation

• Intensive farming

• Urbanization

• Overgrazing