life

                                                                         LIFE 

What is life?.Have any one of us thought about it. Can any one us knows about it.Is life is what we see today. Life is a characteristic distinguishing objects having signalling and self-sustaining processes from those that do not,either because such functions have ceased (death), or because they lack such functions and are classified as inanimate.This are we word that i have got while checking in Internet.Life is a study concerned with science of biology.An organism is any contiguous living system.Organisms undergo metabolism, maintain homeostasis, can grow, respond to stimuli, reproduce and, through natural selection, adapt to their environment in successive generations. More complex organisms can communicate through alternative means.A diverse array of living organisms can be found in the biosphere of Earth, and the properties common to these organisms—plants, animals, fungi, protests, Archer, and bacteria—are a carbon- and water-based cellular form with complex organisation and heritable genetic information.

The Earth was formed about 4.54 billion years ago. The earliest life on Earth existed at least 3.5 billion years ago,during the Archean Era when sufficient crust had solidified following the molten Ha dean Eon. The earliest physical evidence for life on Earth is bionic graphite in 3.7 billion-year-old meta sedimentary rocks discovered in Western Greenland and microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia.Nevertheless, several studies suggest that life on Earth may have started even earlier, as early as 4.25 billion years ago according to one study, and even earlier yet, 4.4 billion years ago, according to another study. The mechanism by which life began on Earth is unknown, although many hypotheses have been formulated. Since emerging, life has evolved into a variety of forms, which biologists have classified into a hierarchy of tax's. Life can survive and thrive in a wide range of conditions.Actually this are the words that i have got while researching the information.Ever humans want there life and there families life to be safe they ever doesn't considers other life or even does not think about them.Also life is also a mixture of happy,sadness,sorrow etc.Every humans must also posses this situations in there life.No humans in this world are always happy every person has some sorrow or sadness in life.so life is a mixture of happiness,sadness,sorrow etc.