A substance released due to natural or human activity and affects the environment adversely is called____ b) The wastes are classified into _____and_____.

Explanation

**Step-by-Step Text Solution:**

1. **Identify the first part of the question:** The question asks for a term that describes a substance released due to natural or human activity that adversely affects the environment.

2. **Define the term:** Such a substance is known as a "Pollutant." Pollutants are substances that cause pollution and can have harmful effects on air, water, and land.

3. **Identify the second part of the question:** The question also asks for the classification of wastes into two categories.

...