Final answer:
The decomposition of organic matter releases greenhouse gases into the atmosphere and reduces the oxygen concentration.
Step-by-step explanation:
The decomposition of organic matter affects the distribution of gases in the atmosphere in several ways. When organic matter decomposes, it releases gases such as carbon dioxide and methane into the atmosphere. These gases are greenhouse gases and contribute to global warming and climate change. Additionally, the decomposition process consumes oxygen and reduces the amount of oxygen available in the atmosphere.
For example, when dead plants and animals decompose, microorganisms break down their organic matter and release carbon dioxide into the atmosphere. This carbon dioxide contributes to the greenhouse effect and traps heat in the Earth's atmosphere. Similarly, the decomposition of organic matter in oxygen-poor environments, such as bodies of water, can produce methane gas, which is an even more potent greenhouse gas than carbon dioxide.
In summary, the decomposition of organic matter contributes to the increased levels of greenhouse gases in the atmosphere, leading to climate change. It also affects the oxygen concentration in the atmosphere, as organic matter decomposes, consuming oxygen.