What is altitude?

Altitude refers to the height of a place above sea level. It is an important factor that influences the climate and vegetation of a region. Higher altitudes are generally colder because temperature decreases as we go up from sea level. For example, mountains at high altitudes have cooler climates and are often covered with snow. Altitude also affects human activities, as areas with high altitude may have thinner air, making it harder to breathe. It is a key concept in geography to understand variations in temperature and environmental conditions.

This question related to Chapter 3 Social Science Class 6th NCERT.
From the Chapter 3. Landforms and Life.
Give answer according to your understanding.