Four subsystems

It is gaseous layer above the Earth's layer composed of 78% nitrogen and 21% oxygen and 1% other gases.

• Biosphere

• Atmosphere

• Geosphere

• Hydrosphere

The zone of Earth where all forms of life exists.

• Hydrosphere

• Atmosphere

• Biosphere

• Geosphere

Solid part of the Earth

• Geosphere

• Atmosphere

• Hydrosphere

• Biosphere

The water part of the Earth that comprises 70% coverage.

• Geosphere

• Hydrosphere

• Atmosphere

• Biosphere

In the layers of the atmosphere, where does the ozone layer can be found?

• Mesosphere

• Stratosphere

• Troposphere

• Exosphere

Shape of planet Earth

• oblate spheroid

• round

• squared

• round spheroid

What is the thickest layer of the Earth?

• Crust

• Outer core

• Inner core

• mantle

What is the movement under the Earth that can create landforms by pushing up mountains and hills?

• erosion

• landslide

• tectonic plate

• avalanche

Comprises of the different landforms?

• Geosphere

• Hydrosphere

• Biosphere

• Atmosphere

Magnetic fields comes from the electricity from the the molten________ and passes through the crust to enter space.

• crust

• mantle

• rocks

• core