The raw material for decomposition is derived from the biotic components of an ecosystem. Biotic components refer to living organisms, including both producers and consumers. Decomposition is a crucial process in the cycling of nutrients within an ecosystem. It involves the breakdown of organic matter into simpler forms that can be used by other organisms.

1) Producers:
Producers, also known as autotrophs, are organisms that can produce their own food through photosynthesis or chemosynthesis. They convert inorganic substances, such as carbon dioxide and water, into organic compounds, such as glucose. When producers die or shed their leaves, stems, or roots, these organic materials become part of the decomposing organic matter.

2) Consumers:
Consumers are organisms that obtain their energy by consuming other organisms. They can be further classified into primary, secondary, and tertiary consumers based on their position in the food chain. When consumers die or produce waste, their bodies and waste materials also become potential sources for decomposition. These organic materials contain complex organic compounds that need to be broken down into simpler forms for recycling within the ecosystem.

3) Decomposers:
Decomposers play a crucial role in the process of decomposition. They are mainly bacteria and fungi that break down complex organic matter into simpler compounds. Decomposers secrete enzymes that break down proteins, carbohydrates, and lipids into smaller molecules that can be absorbed and utilized by other organisms. These microorganisms obtain energy and nutrients from the organic matter they decompose.

4) Abiotic Components:
Abiotic components of an ecosystem refer to non-living factors such as temperature, sunlight, water, and nutrients. While abiotic factors influence the rate of decomposition, they do not directly provide the raw material for decomposition. The raw material for decomposition primarily comes from the biotic components.

In conclusion, the raw material for decomposition is derived from the biotic components of an ecosystem, including producers and consumers. Producers provide organic matter through the shedding of leaves, stems, and roots, while consumers contribute through their bodies and waste materials. Decomposers, such as bacteria and fungi, break down the complex organic matter into simpler compounds, allowing the recycling of nutrients within the ecosystem. Abiotic factors may influence the rate of decomposition but do not directly provide the raw material.

Yes it should be producer because in decomposition leaves bark flowers are dead remain which goes decomposition and these are part of plants (producers).