Do you realise that everything in life comes in a form of cycles? One thing leads to another until it starts all over again from the beginning. It resembles a spinning circular wheel. Cycles are therefore a never-ending chain of reactions.


Cycle of water


For example the cycle of water. Water evaporates from the sea to form water vapour, which rises to the sky, undergoing condensation to result in the formation of clouds. And when the clouds get saturated and heavy, it starts to rain. The rainwater falls back into the sea where it started from.


Cycle of Life


Life comes in a form of a cycle as well. The cycle of life and death. Babies are born from all around the world everyday. While babies are beginning their cycle of life, there are also people who are dying. Babies grow up, become children, then adults, reproduces, grow old and dies. And the cycle goes on and on.


Cycle of energy


Then there is the cycle of energy. Like what all of us learnt in physics and chemistry. The born Haber cycle for instance? There's also Hess cycle and Newton's first, second and third laws. Yup.. Newton stated that energy cannot be wasted but it can be change to one form to another. Perhaps from potential to kinetic energy and back again. And thus, explains the interminable cycle of energy.


Cycle of materials


In other words, recycling. Materials have their own cycles as well. Plastics, metals and paper are usually recycled. Once they have served their varying purposes, they are disposed and made into useful objects again. And the cycle repeats itself.


Cycle of air


Yes, air comes in a form of cycles too. Living organisms take in oxygen and gives out carbon dioxide. The carbon dioxide are then absorbed by plants and trees and are used for photosynthesis in order for them to obtain food and energy. Photosynthesis in turn, results in the production of oxygen, which is once again taken in by living organisms.


Of course, there are several other things in life that occurs in cycles too. The question is where do you determine the start and the end? The egg or the chicken comes first? Leave it up to both your imagination and observations.