Which statement is correct?(1 point)
Responses
There is a thick layer of humus in dry deserts.
There is a thick layer of humus in cold deserts.
There is a thin layer of topsoil in tropical rain forests.
There is a thin layer of topsoil in temperate areas.
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There is a thin layer of topsoil in tropical rain forests.
The correct statement is: "There is a thin layer of topsoil in tropical rain forests."
To determine the correct statement, we need to understand the characteristics of each type of desert and forest mentioned and their associated soil profiles.
1. Dry deserts: These regions are typically characterized by extremely low precipitation and high temperatures, resulting in minimal vegetation growth. As a result, the accumulation of organic matter, known as humus, is limited due to the lack of plant material. Therefore, the statement "There is a thick layer of humus in dry deserts" is likely incorrect.
2. Cold deserts: These regions, although dry, experience colder temperatures compared to other deserts. The presence of cold-tolerant vegetation, such as grasses, shrubs, and lichens, can contribute to the accumulation of organic matter. Based on this, the statement "There is a thick layer of humus in cold deserts" could potentially be correct.
3. Tropical rain forests: These regions have high temperatures and rainfall, leading to abundant vegetation growth. The decomposition of plant material results in the rapid formation of a thick layer of organic matter known as topsoil. Thus, the statement "There is a thin layer of topsoil in tropical rain forests" is likely incorrect.
4. Temperate areas: These regions experience moderate temperatures and receive a sufficient amount of rainfall. This climate supports the growth of diverse vegetation, which contributes to the accumulation of organic matter. Therefore, the statement "There is a thin layer of topsoil in temperate areas" is likely incorrect.
Based on the analysis, the correct statement is: "There is a thick layer of humus in cold deserts."