Statement I: The components of an ecosystem do not include decomposition.

Statement II:  Decomposers break down complex organic matter into simpler inorganic substances such as carbon dioxide, water, and nutrients through the process of decomposition.

Only statement II is correct .

The correct answer is Option (2) - Only statement II is correct .

Statement I: The statement is false. Decomposition is indeed a crucial component of an ecosystem. It involves the breakdown of organic matter by decomposers, which are organisms such as fungi, bacteria, and other microorganisms. Decomposition plays a vital role in nutrient recycling and the release of inorganic substances, contributing to the overall functioning and sustainability of an ecosystem.

Statement II: The statement is true.

Decomposers are organisms, such as fungi, bacteria, and other microorganisms, that play a critical role in the process of decomposition. They break down complex organic matter, such as dead plants and animals, as well as waste materials, into simpler inorganic substances. This process involves the release of carbon dioxide and water as byproducts, along with the breakdown of organic compounds into essential nutrients like nitrogen, phosphorus, and other minerals.

During decomposition, the enzymes produced by decomposers help break down the complex molecules present in organic matter into smaller, more manageable components. These components can then be utilized by other organisms in the ecosystem.

 Therefore,  statements I is false but II is true.