FAQ: If Humus Were Lost From The Soil Due To Excessive Farming And Erosion Which Could Occur Quizlet?

Which soils result from accumulations of thick organic matter such as in the beds of former lakes or bogs?

Histosols are soils that form in decaying organic matter. In low, wet places, like the bogs shown or the marshes below, organic matter accumulates below the water table and decomposes more slowly than it accumulates. Over time, thick accumulations of this material can form.

Why do farmers add organic matter in the form of dead plants to the soil quizlet?

Why do farmers add organic matter in the form of dead plants to the soil? Organic matter improves the soil’s ability to hold water and nutrients. During the Dust Bowl years, thousands of acres in the US lost all vegetation due to drought and the soil blew away.

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Which of the following is correct regarding the color of soil?

Which of the following is CORRECT regarding soil color? Soil color is used solely to determine the moisture content of soil —darker soils have a higher moisture content, whereas lighter soils have less water content. Dark soils always indicate high organic content.

Why might soils rich in organic matter not be fertile quizlet?

Why might soils rich in organic matter not be fertile? a. Soil fertility comes from a balance of organic matter and other mineral nutrients. Large amounts of organic material make soil retain too little water.

Why the presence of large amounts of organic matter alone does not result in fertile soil?

Explain why the presence of large amounts of organic matter alone does not result in fertile soil. This compaction and the loss of pore space reduces the soil’s ability to store water meaning that less water is absorbed by the soil when it rains.

How is agrobiodiversity being affected by industrialized food production?

Agrobiodiversity is threatened through industrialized food production systems when Human-engineered monocultures are used and replace all native species. Genetic engineering can develop crops that are resistant to What are the advantages of genetic engineering?

Which crop is the most resource intensive What is significant about this crop in the real world?

corn is the most – resource intensive crop. In the real world corn is known to use up high amounts of water and decreases the sustainability of soil.

What is the main way in which repeated harvesting of crops impacts soil quality?

The Effect of Monocropping on Soil Health Monocropping is the practice of growing the same crop on the same plot of land, year after year. This practice depletes the soil of nutrients (making the soil less productive over time), reduces organic matter in soil and can cause significant erosion.

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What are three main factors that influence soil color?

What determines soil colour?

  • Mineral matter derived from the constituents of the parent material.
  • Organic matter.
  • The nature and abundance of iron.
  • Moisture content.

What is the main mineral that affects the soil Colour?

Soil colour is usually due to 3 main pigments: black—from organic matter. red—from iron and aluminium oxides. white—from silicates and salt.

Which soil is ashy in color?

Yellow or red soil indicates the presence of oxidized ferric iron oxides. Dark brown or black color in soil indicates that the soil has a high organic matter content. Wet soil will appear darker than dry soil. However, the presence of water also affects soil color by affecting the oxidation rate.

Which of the following is an effect of organic matter on soil?

Organic matter serves as a reservoir of nutrients and water in the soil, aids in reducing compaction and surface crusting, and increases water infiltration into the soil.

What causes soils and their horizons to differ?

All of the options given can cause soil horizons to differ. Climates can affect the type of soil and the composition (A), the animal and plant life that decomposed to form the soil can alter the composition (B), and the land’s layout (C) can have an effect on how the soil forms and its constituent elements.

Which of the following is a way that climate affects soil formation?

Climate affects soil formation by determining the rate of weathering and erosion. Warmer temperatures and increased rainfall increase the rate of weathering, contributing more mineral material for soil formation. These organisms contribute to the type of soil formed.

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