What is water cycle ?
The water cycle, also known as the hydrologic cycle, it’s describes
how of water movement on, above and below the surface of the Earth.
Individual water molecules can come and go, in and out of
the atmosphere. The water moves from one reservoir to another, such
as from river to ocean, or from the ocean to the atmosphere, by the
physical processes of evaporation, condensation, precipitation and
subsurface flow. And during water cycle it can be change into another
state like, solid (ice), and gas (vapor).
During part of the water cycle, the sun heats up liquid water and
changes it to a gas is called evaporation. Water that evaporates
from Earth’s oceans, lakes, rivers, and moist soil rises up into
As water (in the form of gas) rises higher in the air, it starts to
cool and become a liquid again. This process is called
condensation. When a large amount of water vapor
condenses, it results in the formation of clouds.
Some of oxygen is made
in the atmosphere. A lot
of oxygen is stored in
the oxide minerals of the
Earth’s crust and mantle.
Most available oxygen
plants on land.
Photosynthesis is a process
that use by plant or other
organism to convert light
Just as water moves from
the sky to the earth and back in
the hydrologic cycle, oxygen is
also cycled through the
environment. Plants mark the
beginning of the oxygen cycle.
Plants are able to use the energy
of sunlight to convert carbon
dioxide and water into
carbohydrates and oxygen in a
process called photosynthesis.