What is meant by 'remote sensing' ?
Mention any two applications of remote sensing.

Explanation

### Step-by-Step Solution:

1. **Definition of Remote Sensing**:
- Remote sensing is a technique used to gather information about an object or area from a distance without making physical contact with it. This method allows for the observation and analysis of various phenomena on Earth.

2. **Types of Remote Sensing**:
- Remote sensing can be categorized into two main types:
- **Passive Remote Sensing**: This type relies on natural energy, usually from the sun. Passive sensors detect and record the energy that is reflected or emitted from the Earth's surface.
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