Smoke and Fog combinedly forms

Options

A. Rain
B. Soil
C. Smog
D. Acid rain

Explanation

To solve the question "Smoke and Fog combinedly forms," we can follow these steps:

### Step 1: Understand the Components
- Identify what smoke and fog are. Smoke is a mixture of gases and fine particles produced by burning materials, while fog is a collection of tiny water droplets suspended in the air.

**Hint:** Think about the characteristics of smoke and fog individually.

### Step 2: Identify the Combination
- When smoke and fog combine, they create a specific atmospheric condition. This combination is known for its visibility issues and health impacts.

**Hint:** Consider what happens when pollutants (like smoke) mix with moisture in the air (like fog).

### Step 3: Define the Term
- The term used to describe the combination of smoke and fog is "smog." Smog is typically characterized by a yellowish or blackish appearance and can cause various health problems, particularly respiratory issues.

**Hint:** Recall the common environmental term that describes air pollution involving fog and smoke.

### Step 4: Recognize the Effects
- Smog can lead to irritation of the eyes and breathing difficulties. It is associated with various respiratory diseases and is a significant environmental issue in urban areas.

**Hint:** Think about how air quality affects human health.

### Step 5: Conclude the Answer
- Based on the understanding that smoke and fog together form smog, we can conclude that the answer to the question is "smog."

**Final Answer:** Smoke and fog combinedly form **smog**.

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