石头也会烂为题的英语作文300字
    Rocks Can Decay.
    Rocks are often thought of as being solid and unchanging, but they can actually decay over time. This process is called weathering, and it can be caused by a variety of factors, including water, air, and temperature changes.
    Water is one of the most important factors in weathering. When water seeps into cracks in rocks, it can freeze and expand, causing the cracks to widen. Over time, this can break the rock apart. Water can also dissolve minerals in rocks, which can weaken the rock and make it more susceptible to erosion.
    Air can also cause rocks to decay. Oxygen in the air can react with minerals in rocks, forming new compounds that are weaker and more easily eroded. Carbon dioxide in the air can also dissolve in water, forming carbonic acid, which can further dissolve minerals in rocks.
    Temperature changes can also cause rocks to decay. When rocks are heated, they expand. When they cool, they contract. This repeated expansion and contraction can cause rocks to crack and break apart.
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    The rate at which rocks decay depends on a number of factors, including the type of rock, the climate, and the presence of other factors such as vegetation and bacteria. Some rocks, such as granite, are very resistant to weathering, while others, such as limestone, are more easily weathered. Climates that are wet and warm tend to accelerate weathering, while climates that are dry and cold tend to slow it down. Vegetation and bacteria can also help to protect rocks from weathering by providing a barrier between the rock and the elements.
    Weathering is a natural process that plays an important role in the formation of soils and the shaping of landscapes. It can also be a problem, however, as it can damage buildings and infrastructure. Understanding the factors that contribute to weathering can help us to develop strategies to protect our built environment from its effects.

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