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Soil

Soil, by definition, is a earthly compound comprised of biotic (living) and abiotic (non-living) matter that is formed in several layers over millions of years. It is the very component of the Earth that plants need to root themselves and grow in in order to feed all animal life. There are many different types of soil across the globe for each continent and biome, and each type has its characteristics that depict what plants can grow where, when, and how. Questions and answers about soil can be asked and answered here.

10,730 Questions

How does acid in groundwater form caves or caverns?

Acidic groundwater can dissolve limestone or other soluble rocks over time, creating passages and cavities underground. Through a process known as chemical weathering, carbonic acid in the water reacts with the minerals in the rock, slowly eroding and forming caves and caverns. Over millions of years, this ongoing process can create complex underground networks of caves.

What is the term for when water soaks into soil and rocks?

Infiltration is the term used to describe the process of water soaking into soil and rocks. This natural process is important for replenishing groundwater supplies and sustaining ecosystem health.

What is most likely reason wwhy soil erosion can be a major problem?

Soil erosion can be a major problem due to factors such as deforestation, improper land use practices, and heavy rainfall events. These factors can lead to the removal of the top layer of soil, which contains important nutrients for plant growth, resulting in decreased soil fertility and productivity. Erosion can also lead to sedimentation of water bodies, causing water pollution and habitat degradation.

Why do bubbles come from the ground when water is poured on it?

When water is poured on the ground, air trapped in the soil may be released. As the water flows through the ground, it displaces air pockets, causing bubbles to rise to the surface. This effect is commonly seen in saturated or compacted soil.

What is a large groove or channel in the soil that carries runoff?

A large groove or channel in the soil that carries runoff is called a gully. It is typically formed by excessive water flow eroding the soil and creating a deep channel over time. Gullies can contribute to soil erosion and landscape degradation.

Why is sand so important soil?

Sand in soil improves drainage and aeration, promoting healthy root growth. It also helps prevent soil compaction, allowing roots to penetrate more easily. Additionally, sand contributes to soil structure and can improve the overall fertility of the soil.

What are disadvantages of conservation plowing?

Disadvantages of conservation plowing include increased weed growth due to minimal soil disturbance, potential nutrient tie-up from crop residue decomposition, and difficulty in planting crops that require precise seed placement. Additionally, conservation plowing may initially reduce crop yields until soil health improves.

Why it is said that a fertile soil is not necessarily productive?

A fertile soil refers to the presence of essential nutrients needed for plant growth, while productivity is determined by how effectively those nutrients are utilized by plants. Factors like pH levels, soil structure, and moisture levels also play a role in determining productivity. Therefore, a soil can be fertile but not productive if these other factors are not optimal for plant growth.

How might a fallen leaf become a part of the soil?

When a leaf falls to the ground, it begins to decompose through the actions of decomposers like fungi, bacteria, and insects. These organisms break down the leaf into organic matter, which eventually becomes part of the soil. The nutrients released during decomposition enrich the soil, supporting the growth of new plants.

The texture or particle size of soil determines what?

The texture or particle size of soil determines its permeability (how well water can flow through it), its ability to retain nutrients, and its drainage properties. Soils with different textures will have varying capacities to support plant growth and overall ecosystem function.

What types of sediments are in soil which is most common in desert soils?

Desert soils commonly contain sand, silt, and clay sediments. Sands are the largest particles and provide good aeration but have limited water-holding capacity. Silts are intermediate in size and help with nutrient retention. Clays are the smallest particles and have high water and nutrient holding capacity but can be prone to compaction.

Layers of soil that can be penetrated the water are what?

The layers of soil that can be penetrated by water are known as the vadose zone. This zone consists of unsaturated soil layers where water can infiltrate and move through the soil profile. This water can eventually reach the groundwater table or be taken up by plant roots.

How does over cropping cause soil erosion?

Over cropping depletes the soil of nutrients and organic matter, weakening its structure. This makes the soil more susceptible to erosion caused by wind and water, as it is less able to hold together and absorb water. Additionally, the removal of vegetation through over cropping removes the natural protection against erosion that plant roots provide.

How much dirt is needed to raise 1 acre by 8 inches?

To raise 1 acre by 8 inches, you would need approximately 2,722 cubic yards of dirt. This calculation is based on the formula for volume of a rectangular prism (length x width x height) multiplied by the area of 1 acre in square yards (43,560 square feet).

Who does carbon enter soil?

Carbon enters soil through the decomposition of organic matter from dead plants and animals. This process is carried out by microorganisms such as bacteria and fungi that break down the organic material, releasing carbon into the soil. Plants also contribute to the carbon content of soil through their roots and as they shed leaves and other plant materials.

Why is sandy soil high in pH?

Sandy soil tends to have a higher pH because it does not retain moisture well, which can lead to leaching of acidic compounds. Additionally, sandy soil has lower organic matter content, which can result in less acidity buffering capacity, allowing pH levels to rise.

Why does water move very slowly downward through clay soil?

Water moves slowly through clay soil because clay particles are very small and close together, creating a tightly packed structure with small pore spaces. This structure restricts the movement of water and makes it difficult for water to flow freely through the soil. Additionally, clay has a high water holding capacity, so water tends to be retained within the clay particles rather than moving down quickly.

What happens if soil erodes?

If soil erodes, it can lead to the loss of fertile topsoil, which is essential for plant growth. This can result in reduced agricultural productivity, increased sedimentation in water bodies, and loss of habitat for various organisms. Erosion can also contribute to landslides and degradation of ecosystems.

How can soil erosion be beneficial and harmful at the same time?

Soil erosion can be beneficial by promoting the redistribution of nutrients and improving soil fertility in some cases. However, excessive soil erosion leads to loss of topsoil, which is essential for agriculture, and can also result in sedimentation of water bodies, affecting water quality and aquatic life. Balancing the benefits and harms of soil erosion requires proper land management practices.

How do humans aggravate the effects of soil erosion?

Firstly the removal of trees is a removal of nutrients and minerals from the soil as the source of humus is greatly reduced. ... Overgrazing, over cropping and or deforestation can lead to desertification - the spread of desert like lands due to these humanactivities accelerating natural erosion of soil.

What is the difference between the temperature of soil and water after 6 minutes?

After 6 minutes, soil tends to heat up and cool down more slowly compared to water due to differences in their specific heat capacity. Consequently, water will generally cool down or heat up faster than soil.

How does conservation plowing help limit the destruction of soil?

Conservation plowing helps limit soil destruction by reducing erosion and preserving soil structure. By leaving crop residues on the soil surface, it helps retain moisture, nutrients, and organic matter. This practice also minimizes soil disturbance, which helps maintain soil health and fertility.

What can humans do to sustain our soil?

Humans can sustain soil health by practicing cover cropping, crop rotation, reducing tillage, and using organic fertilizers to improve soil structure and fertility. Avoiding overuse of chemical fertilizers and pesticides, as well as preventing soil erosion through techniques like terracing and planting windbreaks, also help to maintain soil quality for future generations. Community efforts to promote soil conservation and education on sustainable agricultural practices can further contribute to the preservation of soil health.