What do you mean by natural resources ? List its two main calegories.

Explanation

**Step-by-Step Solution:**

1. **Definition of Natural Resources:**
Natural resources refer to the components of the biosphere that are essential for sustaining life. These resources include various elements such as air, water, land, energy, minerals, plants, animals, and microorganisms.

2. **Main Categories of Natural Resources:**
Natural resources can be broadly classified into two main categories:
- **Renewable Natural Resources:** These are resources that can be replenished naturally over time and are not depleted by human consumption. Examples include sunlight, wind, water, and forests.
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