earth is the ___________ planet in universe.

• 1

• 2

• 3

• 4

earth is called as __________planet

• blue

• red

• colourless

• violet

water on earth are called as________

• lithosphere

• hydrosphere

• troposphere

• ionosphere

rocks on the earth are called as____________

• lithosphere

• hydrosphere

• biosphere

• ionosphere

air on the earth is called as_______

• ionosphere

• atmosphere

• hydrosphere

• lithosphere

the life on the earth are called as___

• hydrosphere

• ionosphere

• exosphere

• biosphere

no of planets on the universe constitute___

• solar system

• universe

this is a natural resource______

• coal

• table

• chair

• pen

planets having ring _________

• jupiter

• earth

• mars

• venus

what is meaning of four RRRR principle___________

• reduce

• reuse

• recycle and recover

• all the above