1. Physical Geography

Physical environment is made up of

• • Atmosphere

    • Layer of gases and tiny particles that surrounds the earth.

    • Divided into troposphere, stratosphere, mesosphere, thermosphere and exosphere.

    • The condition of the atmosphere at a given time and place is known as weather.

  • Hydrosphere

    • Water found on earth and atmosphere in solid, liquid and gaseous states.

    • The hydrological cycle enables water to move continuously from the earth's surface, atmosphere and underground.

  • Lithosphere (Geosphere in the video)

    • Solid layer of rocks that form the earth's surface.

    • Landforms such as mountains and valleys.

  • Biosphere 

    • All living things on earth, including plant and animal life, on land and in the sea. 

I took the above photographs on a plane above Singapore.  How high was the plane flying? Which layer of the atmosphere do you think I was at? 

 https://byjus.com/physics/atmosphere/