Mechanical Weathering

question 50

Multiple Choice

Mechanical weathering:

• A) reduces solid rock to small fragments by altering the chemical composition of rocks and minerals.
• B) reduces solid rock to small fragments without altering the chemical composition of rocks and minerals.
• C) causes iron to rust.
• D) picks up and carries off weathered rocks and minerals.

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Definitions:

Nitrogen-poor Crops

Crop plants that grow in soils with low nitrogen content, often requiring additional nitrogenous fertilizers for optimum growth.

Leaching

The process by which soluble materials are washed out from soil or wastes, often leading to contamination of waterways.

Nitrate Ions

An anionic form of nitrogen (NO3-) found in soil and water, often resulting from agricultural runoff, and crucial to the nitrogen cycle.

Phosphorus Reservoirs

Natural or artificial storage places for phosphorus, an essential nutrient for plants and animals.