Pollution is rising due to

Options

A. Rains
B. Research institutes
C. Population explosion
D. Automobiles and industries.

Answer

**Step-by-Step Solution:**

1. **Identify the Factors Contributing to Pollution:**
- Pollution can arise from various sources, but we need to focus on the options provided: rains, resource institutes, population explosion, and automobiles and industries.

2. **Evaluate Each Option:**
- **Rains:** While rainfall can influence pollution levels (e.g., acid rain), it is not a direct cause of rising pollution.
- **Resource Institutes:** These are typically involved in managing resources and may not contribute directly to pollution.
- **Population Explosion:** While a growing population can increase pollution indirectly through greater demand for resources, it is not the primary cause.
- **Automobiles and Industries:** This option stands out as a significant contributor to pollution.

3. **Explain the Impact of Automobiles and Industries:**
- The excessive use of automobiles leads to the emission of harmful gases such as carbon monoxide, nitrogen oxides, and sulfur dioxide from vehicle exhausts.
- Industries contribute to pollution through emissions resulting from industrial processes, often due to incomplete combustion of fossil fuels.
- Both sectors are responsible for air pollution, noise pollution, and the release of toxic effluents into the environment.

4. **Conclude the Correct Answer:**
- Based on the evaluation, the correct answer to the question "Pollution is rising due to" is **automobiles and industries**.