Sci-Five | The Hindu Science Quiz: On Soil
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What are the six layers of healthy soil called?
- Horizons
- Layers
- Strata
- Levels
Healthy soils have six different layers (known as horizons).
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2 / 5 |
What does the topsoil layer mainly consist of?
- Minerals
- Organic matter like plant and animal residues
- Bedrock
- Water
Organic matter like plant and animal residues are mainly found in the topsoil.
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Which organisms are examples of soil dwellers?
- Earthworms and tardigrades
- Fish and frogs
- Birds
- Snails and coral
From the familiar earthworms, to the lesser-known tardigrade and many undiscovered species are found in the soil.
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4 / 5 |
How does soil contribute to the fight against climate change?
- By absorbing water
- By storing more carbon than the atmosphere and all forests combined
- By filtering air pollutants
- By cooling the Earth’s surface
Soils store more carbon than the atmosphere, and all of the world’s plants and forests combined, which means that soil is one of our most important weapons in the fight against climate change.
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5 / 5 |
How long does it take for a single centimetre of topsoil to form?
- 10 years
- 100 years
- 1,000 years
- 10,000 years
It can take up to thousand years for a single centimetre of topsoil to form.
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Published – December 12, 2024 05:00 pm IST
