What Does Life Need?

Image showing title of the video and illustrations for Air, Water, Food and Shelter.

Life on Earth

Short Intro Text: 

How are living things connected? What do they need to survive? Can we find clues in the Solar System that help us find out why there is life on Earth?

Complete this quiz to discover what makes our planet so special!

Life on Earth

The timeline of life evolving on Earth
Credit: LadyofHats

Life on Earth has taken billions of years to evolve. Life is characterised as anything which has the following traits:


Earth's atmosphere from the
International Space Station (ISS)
Credit: NASA

An Atmosphere is a thin layer of gas which surrounds a planet or moon. The gravity of a planet or moon holds the Atmosphere in place. Small planets and moons have low mass and a weak gravitational pull.  This means they tend not to hold onto an atmosphere.