here the importance of top soil come.top
soil is rich in micronutrients
which is essential for growth of plants and takes hundreds of years to accumilate.
BOD (Biochemical Oxygen Demand) measures the amount of oxygen required by microorganisms to decompose organic matter in water. Organic matter contributes to BOD levels as it serves as a food source for microorganisms, leading to oxygen depletion in water bodies. Therefore, higher levels of organic matter can result in increased BOD, impacting water quality and aquatic life.
Soil that contains a large amount of organic matter is known as humus-rich soil. This type of soil is very fertile and ideal for plant growth, as organic matter helps improve soil structure, water retention, and nutrient availability.
The hypothesis for soil could be that the type or amount of organic matter present in soil will affect the growth of plants. This hypothesis can be tested by conducting experiments to observe the relationship between soil composition and plant growth.
The topsoil horizon is dark because it contains a high amount of organic matter in the form of decomposed plant and animal material. This organic matter enriches the soil with nutrients, promoting healthy plant growth. The dark color is a result of the organic matter breaking down and mixing with mineral particles in the soil.
The topsoil layer contains the greatest amount of decayed organic material, also known as humus. This layer is rich in nutrients and organic matter, making it ideal for plant growth.
BOD (Biochemical Oxygen Demand) measures the amount of oxygen required by microorganisms to decompose organic matter in water. Organic matter contributes to BOD levels as it serves as a food source for microorganisms, leading to oxygen depletion in water bodies. Therefore, higher levels of organic matter can result in increased BOD, impacting water quality and aquatic life.
As the space changes between the particles, so does the state of matter.
The relationship between COD and BOD5 is that COD measures the total organic matter in water, while BOD5 measures the amount of oxygen required by microorganisms to biologically degrade organic matter. The ratio of BOD/COD or COD/BOD can indicate the biodegradability of organic matter in water; a high ratio suggests that the organic matter is easily biodegradable, while a low ratio indicates it is less biodegradable.
It's NOT "A" B: A decrease in the amount of organic matter.
Soil that contains a large amount of organic matter is known as humus-rich soil. This type of soil is very fertile and ideal for plant growth, as organic matter helps improve soil structure, water retention, and nutrient availability.
Biomass is the total amount of organic matter present in any trophic level.
The hypothesis for soil could be that the type or amount of organic matter present in soil will affect the growth of plants. This hypothesis can be tested by conducting experiments to observe the relationship between soil composition and plant growth.
Organic matter is made up of organic compounds, which are the remains of dead plants and animals. Theoretically, anything not made up of organic matter is inorganic. The distinction between what is inorganic and organic is heavily debated among scientist.
Biomass pyramid
Organic soil holds more water than non-organic soil. An article written by Lara Bryant for the expert blog component of the Natural Resources Defense Council website Wednesday, May 27, 2015, provides the math for the relationship between organic matter and water holding capacity increases. It states that a one percent increase in organic matter yields an increase by 21,668 gallons (82,022.30 liters).
COD refers to the total amount of oxygen required to oxidize organic and inorganic matter in water, while soluble COD specifically measures the amount of oxygen needed to oxidize only the soluble organic matter in a sample. Soluble COD is a subset of total COD and provides a more focused measurement on the readily biodegradable organic compounds in water.
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