Which of the following increases the amount of `CO_(2)` in atmosphere ?

Options

A. Photosynthesis
B. decay of animals
C. Breathing
D. Burning of coal

Answer

To determine which of the following increases the amount of CO₂ in the atmosphere, we need to consider various human activities and natural processes that contribute to carbon dioxide emissions. Here’s a step-by-step breakdown of the factors that lead to an increase in atmospheric CO₂:

### Step 1: Identify Human Activities
- **Burning Fossil Fuels**: This includes the combustion of coal, oil, and natural gas for energy. When fossil fuels are burned, they release a significant amount of CO₂ into the atmosphere.

### Step 2: Analyze Biological Processes
- **Respiration**: All aerobic organisms, including humans, inhale oxygen and exhale carbon dioxide. This biological process contributes to the natural carbon cycle and increases atmospheric CO₂ levels.

### Step 3: Consider Decomposition
- **Decay of Organic Matter**: When plants and animals die, their decomposition releases carbon dioxide back into the atmosphere. This process is facilitated by microorganisms that break down organic material.

### Step 4: Assess Deforestation
- **Deforestation**: Cutting down forests reduces the number of trees that can absorb CO₂ during photosynthesis. Additionally, the burning or decay of trees releases stored carbon back into the atmosphere.

### Step 5: Evaluate Industrial Activities
- **Industrial Emissions**: Factories and industrial processes often release CO₂ as a byproduct of manufacturing and energy consumption.

### Conclusion
Based on the above analysis, the following activities increase the amount of CO₂ in the atmosphere:
1. Burning fossil fuels (coal, oil, natural gas)
2. Human respiration
3. Decomposition of organic matter
4. Deforestation
5. Industrial emissions