a) All wastes are pollutants.
b) Air, land and water surroundings are affected due to improper disposal of wastes.

Explanation

### Step-by-Step Solution:

**Step 1: Analyze the first statement - "All wastes are pollutants."**
- To determine the validity of this statement, we need to understand what constitutes a pollutant.
- Pollutants are substances that cause harm to the environment and living organisms. They can be released into the environment through human activities or natural processes.

**Step 2: Define pollutants.**
- Pollutants are not necessarily waste. They are harmful substances that can adversely affect the environment.
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