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Definitions from the Web

Definition

Depression in the earth's surface refers to a concave or low-lying area on the Earth's crust, usually formed through various geological processes. These depressions can vary in size and shape, ranging from small basins to large craters.

Senses

Sense 1: Geological Depressions

In a geological context, depressions in the earth's surface can be formed by several factors, including tectonic activity, erosion, volcanic activity, or the impact of meteorites. These depressions often exhibit unique landforms and play a crucial role in shaping the Earth's topography.

Sample sentence: The Grand Canyon in Arizona is one of the most famous depressions in the earth's surface, showcasing the power of natural erosion over millions of years.

Sense 2: Environmental Depressions

In an environmental context, depressions in the earth's surface can refer to areas that accumulate water or exhibit a seasonally wet or marshy landscape. These depressions can serve as crucial habitats for various flora and fauna, promoting biodiversity.

Sample sentence: Wetlands are examples of depressions in the earth's surface that provide vital ecological services such as water purification and habitat for numerous species.

Sense 3: Human-made Excavations

Depressions in the earth's surface can also result from human activities, such as mining, construction, or land subsidence. These excavated or artifically-induced depressions can have various implications and are often characteristic of localized impacts on the environment.

Sample sentence: The massive open-pit mines of the iron ore industry have left deep depressions in the earth's surface, altering the natural landscape and affecting surrounding ecosystems.