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 activities increases the amount of carbon dioxide (CO₂) in the atmosphere, we can analyze several factors that contribute to CO₂ emissions. Here’s a step-by-step breakdown of the processes that lead to an increase in atmospheric CO₂:

### Step 1: Identify Activities that Release CO₂
- **Burning Fossil Fuels**: This includes coal, oil, and natural gas. When these fuels are burned for energy, they release significant amounts of CO₂ as a byproduct.

### Step 2: Consider Human Activities
- **Electricity Consumption**: The generation of electricity often involves burning fossil fuels, which increases CO₂ levels. Higher electricity consumption typically leads to more fossil fuel burning.

### Step 3: Biological Processes
- **Respiration**: All aerobic organisms, including humans, inhale oxygen and exhale CO₂. This natural process contributes to the CO₂ levels in the atmosphere.

### Step 4: Decomposition
- **Decay of Organic Matter**: When animals and plants die, their decomposition releases CO₂ back into the atmosphere. Microorganisms break down the organic material, which results in CO₂ production.

### Step 5: Deforestation
- **Cutting Down Forests**: Trees absorb CO₂ during photosynthesis. When forests are cut down, not only is this absorption reduced, but the carbon stored in trees is released back into the atmosphere as CO₂.

### Step 6: Industrial Activities
- **Manufacturing and Transportation**: The operation of factories and the use of vehicles contribute to CO₂ emissions through the combustion of fossil fuels.

### Conclusion
Based on the analysis, activities that increase the amount of CO₂ in the atmosphere include:
1. Burning fossil fuels (coal, oil, natural gas)
2. Increased electricity consumption
3. Respiration by living organisms
4. Decomposition of organic matter
5. Deforestation
6. Industrial activities

### Final Answer
Any of the above activities can be considered correct as they all contribute to an increase in atmospheric CO₂.

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