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Answer:

air

explaination:

During long dry spells, the water content in the soil decreases significantly as it evaporates or is absorbed by plants. This reduction in water creates more space in the soil's pore spaces, which allows air to fill these voids. The increase in air is crucial for plant health, as it facilitates better oxygen exchange in the root zone. Adequate air in the soil helps prevent conditions that can lead to root rot, as roots require oxygen for respiration. Therefore, during dry periods, air becomes the predominant component in the soil's pore spaces.

Topic: Soil Science, Soil Composition, Plant Health

Tags: soil science soil composition plant health dry spells

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During long dry spells, which component of soil increases in pore spaces?

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