Homeostasis is the ability of the body to a relatively internal environment, of environmental

Homeostasis is the ability of the body to preserve a relatively secure internal environment, regardless of the environment outside.

What is the Environment?

Anything which is present in the surrounding of an organism is called its environment.

Every living organism is offered with such type of process that maintains the overall stable internal environment and monitors the proper functioning of its body. The process is referred to as Homeostasis.

Therefore, homeostasis is the ability of the body to preserve a relatively secure internal environment, regardless of the environment outside.

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Homeostasis is the ability of the body to maintain a relatively stable internal environment,despite of environmental fluctuations.

Nature has blessed living organisms with an excellent self regulatory system which adjusts all the internal conditions of a body in a stable state that are necessary for organism's survival.

Homeostasis maintains the flow of ions, nutrients, energy, temperature and every aspect that is important for an organism's survival.

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phylogenetic tree is the tree of life or evolution tree. it shows the different branches of evolution. the sequence goes like tissues - coelom - backbone - endoskeleton - segmentation