Give it Some Thought: Weathering - Biological Activities When a rock undergoes w

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Give it Some Thought: Weathering - Biological Activities When a rock undergoes weathering, it breaks into smaller fragments. The two types of weathering are chemical and mechanical weathering. Biological beings play a major role in the breakdown of rocks through both physical (mechanical) and chemical means. For instance, plant roots in search of nutrients grow into fractures in rocks, which could facilitate rock breakdown. Likewise, activities that remove vegetation such as grazing and forest fires can expose the surface rock to various weathering processes. Acidic deposits from some organisms could also facilitate chemical decomposition. Part A Look at the descriptions below of scenarios and determine whether the scenario inhibits weathering or enhances weathering. Drag the appropriate items to their respective bins. Hints Reset Help A tree is growing on the side of a Rows of trees are planted on the Animals burrow into the ground, oosening the soil. A once bare field is planted with trees and shrubs. rocky hill, and its roots are growingborder of a field to slow the wind and into a crack in the rack. deflect it upward. Humans remove trees and other egetation in order to develop an area of land. Consistent A forest fire destroys vegetation without regrowth. Lichens, which secrete acids, encrust the surface of a rock. grazing by a herd of cattle Inhibits weathering Enhances weathering Submit My Answers Give Up

Explanation / Answer

Enhance weathering

1. Humans remove trees and other vegetation in order to develop an area of land

2. A forest fire destroys vegetation without regrowth

3. Consitent grazing by a herd of cattle

4. Animals burrow into the ground, lossening the soil

5. Lichens, which secrete acids, encrust the surface of a rock

6. A tree is growing on the side of a rocky hill, and its roots are growing into a crack in the rock

Inhibits weathering

7. A once bare filed is planted with trees and shrubs

8. Row of trees are planted on the border of a field to slow down the wind and deflect it upward

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