Exercises on soil types –

(Unioeste) Soils are crucial for life on Earth (BRADY, NC; WEIL, RR Elements of nature and soil properties, 2013). We may not realize it on a daily basis, but almost all of our food, clothing, furniture and countless other everyday items come directly or indirectly from soil. Despite this importance, this fundamental asset for our lives has been subject to degradation processes.

In this context, select the INCORRECT alternative regarding soils, their management, conservation.

A) Among the many functions of soil, we can mention: a means for plant growth, a system to supply and purify water, a means for engineering works, habitat for soil organisms, atmosphere modifier, nutrient and organic waste recycling system.

B) Soil formation is influenced by factors such as physical and chemical weathering. The weathering process fragments rocks and minerals, which alters their original physical and chemical characteristics. Geological (water and oxygen) and biological agents (microorganisms) reinforce this process.

C) Conservationist soil management systems include the presence of green cover, mulch, green manure, crop rotation, retention strips, among other actions, in addition to terracing and minimum disturbance.

D) Soil erosion (mainly caused by water and wind) results in the transport of soil and other nutrients to lower areas. The transported material normally reaches water bodies, fertilizing them. Consequently, fisheries and aquatic crop productivity increase.

E) Mapping soil types in the landscape is important for its management and conservation. In this sense, it is essential to map them at different cartographic scales to assist in the different planning and management actions of this resource.