FORESTRY
PLANT AND WOOD ANATOMY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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cracking of rock by plant roots
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rain percolating through limestone
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frost action
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abrasion
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Detailed explanation-1: -Rusting iron because of oxidation is the best example of chemical weathering.
Detailed explanation-2: -Limestone is chemically weathered by a process of carbonation. As rainwater absorbs carbon dioxide as it passes through the atmosphere it becomes a weak carbonic acid. The water and carbon dioxide combine to form a weak carbonic acid. This weak carbonic acid acts on the fissures in the limestone.
Detailed explanation-3: -Chemical weathering describes the process of chemicals in rainwater making changes to the minerals in a rock. Carbon dioxide from the air is dissolved in rainwater, making it slightly acidic. A reaction can occur when the rainwater comes into contact with minerals in the rock, causing weathering.