Atmosphere and ocean

Exosphere layer

The outermost layer

Contains light gases such as helium and hydrogen

Air becomes thinner towards space

Man-made satellites,space telescopes and space shuttles orbit the Earth

Thermosphere layer

the hottest layer

Contains the ionosphere layer.

the gas atoms inthe ionosphere are blasted by ultraviolent reflects radio signals back to the Earth to enable radio communication between people

Mesosphere layer

The coldest layer

Protects the Earth from meteoroids

Meteoroids rub against air particles and burn up into fragments in the mesosphere to produce meteors

Stratosphere layer

The air is calm and thin ,has no clouds,dust nor water vapour

It allows aircrafts to fly safely

It has the ozone layer to protect the Earth from ultraviolent rays from the Sun

The rays can cause skin cancer,eye cataract and weaken the immune system of our body

Troposphere layer

Closest to the Earth

Formation of cloud and weather changes such as rain,snow and lightning occur in this layer and therefor the weather may be turbulent

It has the highest air pressure

Surface ocean

It receives the most amount of sunlight

most aquatic plants live in this zone

Twilight surface

It receives a small amount of sunlight

The fishes living in this zone have large eyes to enable them to see better

Becomes the habitat for large marine animals, such as giant squids and various species of whales

Dark zone

It is completely dark

Sunlight cannot penetrate at all

Most deep creatures use bioluminescence to produce lights