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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

What do animals contribute to the composition of soil?

Animals contribute to the composition of soil by mixing organic matter through their burrowing activities, which helps to increase soil aeration and water infiltration. Their waste also adds nutrients to the soil, promoting plant growth and overall soil health. Additionally, animals can help disperse seeds and fungal spores, contributing to biodiversity in the soil.

Is Mars' soil blue?

No, it is a red-orange color due to the deposition of iron (or, due to the high iron content of the soil), hence the name "The Red Planet"

What plant cell absorbs water from the soil?

The root hairs of plant cells are responsible for absorbing water from the soil. These specialized structures increase the surface area of the roots, allowing for more efficient absorption of water and nutrients.

What increases a plants ability to absorb water and nutrients?

Increasing the surface area of the roots through mechanisms like root hairs and mycorrhizal associations can enhance a plant's ability to absorb water and nutrients. Additionally, maintaining proper soil structure and pH levels can create optimal conditions for nutrient uptake. Lastly, promoting healthy microbial activity in the soil can facilitate the breakdown of organic matter into essential nutrients for the plants.

Why black soil needs to be ploughed after the first rain?

Ploughing black soil after the first rain helps in breaking up clods and facilitating aeration, drainage, and root penetration. This process ensures that the soil texture becomes more suitable for plant growth by improving its structure and water retention capacity.

Is aquamarine found in soil?

Aquamarine is a type of beryl mineral that is typically found in pegmatite rocks, rather than in soil. It forms from the crystallization of magma that cooled within these rocks over time. It is usually mined from these pegmatite deposits rather than from soil.

What term is the process in which the violent shaking of an earthquake turns soft soil into liquid mud is called?

Source

Old Answer:

Earthquakes are caused by an abrupt shift of rock along a fracture in the Earth.

Most earthquakes are caused by slow movements inside the Earth that push against the Earth's brittle, relatively thin outer layer, causing the rocks to break suddenly. This outer layer is fragmented into a…

My answer:

If you're doing homework with a fill-in-the-blank, it's 'liquifaction.'

What is the purpose of the horizon shades on a sextant?

The horizon shades on a sextant are used to block out excess light from the sun or other bright sources on the horizon, making it easier to take accurate measurements of celestial objects such as stars or planets. They help to reduce glare and improve visibility when using the sextant for navigation or celestial observations.

What is the third step of soil formation?

The third step of soil formation is known as alteration. This involves the physical and chemical weathering of rocks and minerals by factors like temperature changes, water movement, and organic activity. These processes break down the parent material into smaller particles, which eventually form the basis of soil.

Is it natural to enjoy eating dirt?

Eating dirt, known as geophagia, is not considered natural or safe behavior for humans. It can lead to health risks such as exposure to toxins, parasites, or bacteria found in the soil. If you or someone you know is experiencing an urge to eat dirt, it may be a sign of an underlying health issue that should be discussed with a healthcare professional.

Do plants need soil to make starch?

No, plants do not require soil to make starch. Starch is synthesized during photosynthesis, where plants use sunlight, water, and carbon dioxide to produce glucose, which is then stored as starch in various plant parts such as roots, stems, and leaves. Soil provides nutrients and support for the plant but is not directly involved in the production of starch.

What is the soil conditions for grasslands?

There are two different grasslands, the tropical grasslands, or Savannah, and the temperate grasslands or the prairies/steppe. Tropical grasslands are generally very hot, with a definite wet and dry season, whereas temperate grasslands are generally cooler, with more of a constant dry season.

Which is a living material that might be found in soil?

Earthworms are living organisms commonly found in soil. They play a vital role in soil health by breaking down organic matter and improving soil structure.

Boil is to soil as goat is to?

Grazing. Boil is related to the process of heating water, while soil is related to earth. Similarly, goat is related to grazing, where the animal feeds on grass.

Which part of the Earth is composed of rocks and soil?

The lithosphere is what compounds rocks and soils. This is a sphere of the earth.
The pedosphere is the sphere of the earth that is composed of rocks and soils.
The part of the earth that is composed of rocks and soil is called the crust. The crust is the part that supports life.

Whose ashes are aboard New horizons?

The ashes of Clyde Tombaugh, the astronomer who discovered Pluto in 1930, are aboard the New Horizons spacecraft. After his death in 1997, a small container with his ashes was attached to the spacecraft as a way to honor his role in the exploration of the distant dwarf planet.

What is necessary in the soil for a plant to be healthy and green?

For a plant to be healthy and green, it needs access to essential nutrients like nitrogen, phosphorus, and potassium in the soil. Adequate sunlight, water, and proper pH levels are also important for optimal plant growth and greenness. Additionally, good soil structure and drainage help provide oxygen to the plant's roots, supporting its overall health and color.

How does transpiration help the roots absorb water and minerals from soil?

Transpiration creates a negative pressure in the leaves, which pulls water up from the roots through the xylem tissue in a process called transpiration pull. This upward movement of water helps to maintain a continuous flow of water and nutrients from the soil to the roots. This process is essential for the root system to efficiently absorb water and minerals from the soil.

What soil has the roughest texture?

Clay soil generally has the roughest texture among the different types of soil. It is composed of very fine particles that form a sticky and dense texture when wet. This texture can make it difficult for water and roots to penetrate, resulting in poor drainage.

Is silt the same as potting soil?

No, silt and potting soil are not the same. Silt is a sediment that falls between sand and clay in terms of particle size, while potting soil is a mixture of organic matter and other ingredients like peat moss, perlite, and vermiculite used for growing plants in containers.

Why would a hot and damp climate affect soil?

A hot and damp climate can accelerate the breakdown of organic matter in soil, leading to faster decomposition and nutrient leaching. It can also increase microbial activity, which can impact soil structure and fertility by affecting nutrient availability. Additionally, the high temperatures and moisture can promote the growth of certain pathogens and pests that can harm plants.

How does a forest fire make the soil richer?

A forest fire can make the soil richer by breaking down organic material in the form of plant matter and depositing nutrients back into the soil as ash. The ash left behind after a fire contains important minerals and nutrients that can promote new plant growth and replenish the soil. Additionally, the fire can open up the forest canopy, allowing more sunlight to reach the forest floor, which can also stimulate plant growth.

Why is it that ships disappear over the horizon?

Ships appear to disappear over the horizon due to the curvature of the Earth. As a ship moves away from an observer, it eventually reaches a point where the curvature of the Earth blocks the line of sight between the observer and the ship, making it seem as though the ship has disappeared.

What type of soil is on the moon?

The rocks that were collected from the moon have been studied extensively for their mineral composition. Examination of "moon soil" samples (called regolith) have revealed some strikingly similarities to earth's geology.

Rocks made of basalt from volcanic eruptions and minerals, such as plagioclase feldspar and olivine, are exactly the kinds of rocks we find here on earth.

In striking contrast to the true soils that we have here on earth, there are no organic materials in moon dust. Organic materials come from the breakdown of living things, such as trees and animals. Since there's nothing living on the moon, the soil is not a true soil like we're used to here. It's gray with very fine grained particles like sand or even dust and extremely dry because there is no water on the moon. (Although scientists have theorized that there is water ice trapped in the polar regions of the moon).

Because the moon has no atmosphere to protect it from solar wind, molecules (like hydrogen, helium, neon, carbon and nitrogen) from the sun impact the moon's surface directly and are implanted into mineral grains. Scientists estimate that about 50% of the moon's surface composition is oxygen, bound up in silicate minerals!