Classify the natural resources on the basis of their availability.

Explanation

To classify natural resources based on their availability, we can categorize them into two main types: renewable resources and non-renewable resources. Here’s a step-by-step breakdown of this classification:

### Step 1: Understand Natural Resources
Natural resources are materials or substances that occur in nature and can be used for economic gain or to support life. They can be classified based on their availability and replenishment rate.

### Step 2: Identify Renewable Resources
Renewable resources are those that can be replenished naturally over time. They are sustainable and can be used repeatedly without the risk of depletion. Examples include:
- Solar energy
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