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decompose

Primary Information
Secondary Information

Definition

Decomposition is the process by which dead organisms are broken down into smaller parts. This process is carried out by a variety of organisms, including bacteria, fungi, and insects.

The decomposition process releases nutrients back into the soil, which can then be used by other plants and animals. Decomposition is an important part of the nutrient cycle.

There are two main types of decomposition: aerobic and anaerobic. Aerobic decomposition occurs in the presence of oxygen, while anaerobic decomposition occurs in the absence of oxygen.

The rate of decomposition depends on a number of factors, including the type of organism, the environment, and the temperature.

Decomposition can be sped up by adding moisture and oxygen to the environment. Decomposition can be slowed down by freezing or drying the environment.

How can the word be used?

The body of the animal decomposed and was eventually reduced to a skeleton.

decompose

Different forms of the word

Noun: decomposition (plural: decompositions).

Adjective: decomposing.

in the process of decomposition.

Verb: to decompose.

to break down organic matter into simpler substances.

Etymology

The word "decompose" comes from the Latin word "de componere", which means "to put down" or "to take apart". This is because decomposition is the process of breaking down something into smaller parts.

Question

What things are able to decompose?

AQA Science Exam Question and Answer

Question:

Question: Define the process of decomposition and its role in nutrient cycling within ecosystems. Explain the key factors that influence the rate of decomposition, providing two examples of how human activities can impact this essential ecological process.

Answer:

  • Decomposition: Decomposition is a natural biological process in which organic matter, such as dead plants and animals, is broken down into simpler substances by decomposers (like bacteria and fungi). This breakdown releases nutrients back into the soil, making them available for uptake by plants, thus playing a crucial role in nutrient cycling within ecosystems.
  • Factors Influencing Decomposition Rate: Several factors influence the rate of decomposition, including temperature, moisture, oxygen availability, and the types of organisms present. Warmer temperatures and ample moisture accelerate decomposition, while lack of oxygen (as in waterlogged environments) slows it down.
  • Impact of Human Activities: Human activities can significantly influence decomposition. For instance, excessive use of chemical fertilisers can hinder the activity of decomposers, reducing the nutrient cycling process. Also, improper waste disposal, such as burying organic waste in landfills, prevents efficient decomposition, leading to the release of greenhouse gases.

Understanding decomposition and its sensitivity to human activities is crucial for maintaining healthy ecosystems and sustainable nutrient cycling in the natural environment.