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What does the decomposition of organic matter by heat describe?
Pyrolysis
What is dry decomposition?
Decomposition (or rotting) is the process by which organic substances are broken down into simpler forms of matter.
Explain why an increase in the amount of organic matter in a aquatic ecosystem will reduce oxygen levels?
An increase in the amount of organic matter in an aquatic system will reduce oxygen levels because if more organic matter is introduced the population of decomposing bacteria will increase and they will use up more oxygen for respiration (by which they decompose matter) than that which is being produced, thereby reducing oxygen levels.
Decomposition and decay of organic matter are accomplished by the action of?
bacteria and fungi
What are the factors affecting organic matter decomposition?
TEMPERATURE MOISTURE AIR
What matter is converted into animal and microbial tissue during decomposition?
Organic matter is converted into animal and microbial tissue during decomposition. This matter can be then used to fertilize the soil.
Why good air flow is necessary for the decomposition of the organic matter?
Good air flow is necessary for the decomposition of organic matter because decaying matter builds up gases. If the gases are not allowed to escape the area, there could be an explosion.
Why do humus tend to increase with the clay content of soil?
As the clay content increases, there is more surface area in the soil for organic matter to adsorb to, which decreases the rate of decomposition.
What is added to the atmosphere during bacterial decomposition of organic matter?
bacteria or fungi
How does organic matter affect the volume of weight of soils?
Organic matter can increase the volume of soil as it decomposes, releasing gases that can cause soil expansion. However, the weight of the soil can decrease with the addition of organic matter, as it is lighter than mineral components like sand, silt, and clay. Overall, the impact of organic matter on soil volume and weight will depend on factors such as decomposition rate, soil texture, and environmental conditions.
How does soil pH affect organic matter decomposition?
Soil pH can affect organic matter decomposition by influencing the activity of microorganisms involved in the decomposition process. Most microorganisms responsible for breaking down organic matter thrive in slightly acidic to neutral pH conditions. Extreme pH levels can inhibit microbial activity and slow down decomposition rates. Additionally, pH levels can also impact the availability of essential nutrients for microorganisms, further influencing decomposition.
How does the decomposition of algae contribute to an increase in biological oxygen demand?
When algae decompose, they release organic matter into the water. Bacteria break down this organic matter, using up oxygen in the process. This increase in bacterial activity leads to a higher demand for oxygen in the water, which can decrease oxygen levels and harm aquatic life.
