Quiz on the Effects of Human Practices on Soil

What is the primary role of soil in our ecosystem?

• Supports plant growth
• Filters water
• Stores carbon
• All of the above

Which human activity is identified as a major factor affecting soil quality?

• Urban development
• Agricultural activities
• Mining
• Deforestation

What is soil compaction?

• The process of adding nutrients to soil
• The pressing together of soil particles
• The mixing of different soil types
• The removal of soil layers

What is one major effect of soil compaction?

• Increased water absorption
• Improved root growth
• Reduced water absorption
• Enhanced nutrient cycling

How does heavy machinery contribute to soil compaction?

• By aerating the soil
• By compressing soil particles
• By adding organic matter
• By improving drainage

What does salination refer to?

• Loss of nutrients in soil
• Accumulation of salts in soil
• Increase in soil moisture
• Decrease in soil pH

What causes salination in agricultural areas?

• Excessive rainfall
• Groundwater movement
• Soil erosion
• Crop rotation

What is a consequence of high salt levels in soil?

• Improved plant growth
• Enhanced nutrient absorption
• Difficulty in water absorption
• Increased biodiversity

In which region has soil salinity increased due to repeated irrigation?

• Amazon Rainforest
• Nile Valley
• Great Plains
• Sahara Desert

What is one way soil quality can be improved?

• Using heavy machinery more frequently
• Implementing crop rotation
• Increasing irrigation without management
• Reducing organic matter