What is life?
By joechan
@joechan (342)
Malaysia
21 responses
@tejaswinee (705)
• India
29 Nov 06
its human nature to keep wanting more from life.
but i am really happy with what i have. Although i intend to have more.
@leapfalling (500)
• China
29 Nov 06
just do you want to do.
but the real force us to do we have to do...
i do not satisfied with my life.
@raja_pro (923)
• India
29 Nov 06
What is life? Does this sound like a strange question to you? Of course we all know what is meant by the word "life", but how would you define it?
Do all living things move? Do they all eat and breathe? Even though we all seem to know what is meant by saying something is "alive", it's not very easy to describe what "life" is. It's almost as hard as describing where life came from.
Even the biologists (people who study life) have a tough time describing what life is! But after many years of studying living things, from the mold on your old tuna sandwich to monkeys in the rainforest, biologists have determined that all living things do share some things in common:
1) Living things need to take in energy
2) Living things get rid of waste
3) Living things grow and develop
4) Living things respond to their environment
5) Living things reproduce and pass their traits onto their offspring
6) Over time, living things evolve (change slowly) in response to their environment
Therefore, in order for something to be considered to "have life" as we know it, it must possess these characteristics.
@raja_pro (923)
• India
29 Nov 06
What is life? Does this sound like a strange question to you? Of course we all know what is meant by the word "life", but how would you define it?
Do all living things move? Do they all eat and breathe? Even though we all seem to know what is meant by saying something is "alive", it's not very easy to describe what "life" is. It's almost as hard as describing where life came from.
Even the biologists (people who study life) have a tough time describing what life is! But after many years of studying living things, from the mold on your old tuna sandwich to monkeys in the rainforest, biologists have determined that all living things do share some things in common:
1) Living things need to take in energy
2) Living things get rid of waste
3) Living things grow and develop
4) Living things respond to their environment
5) Living things reproduce and pass their traits onto their offspring
6) Over time, living things evolve (change slowly) in response to their environment
Therefore, in order for something to be considered to "have life" as we know it, it must possess these characteristics.
@blacknight000 (1397)
• Philippines
29 Nov 06
life is full of happiness, sufferings, and pains!.. i based it on own experienced from the past and in the future!...
@moneymind (10510)
• Philippines
29 Nov 06
Life is the characteristic state of organisms and individual cells. Properties common to the known organisms found on Earth (plants, animals, fungi, protists, archaea and bacteria) are that they are carbon-and-water-based, are cellular with complex organization, undergo metabolism, possess a capacity to grow, respond to stimuli, reproduce and, through natural selection, adapt in succeeding generations.
An entity with the above properties is considered to be organic life. However, not every definition of life considers all of these properties to be essential. For example, the capacity for descent with modification is often taken as the only essential property of life. This definition notably includes viruses, which do not qualify under narrower definitions as they are acellular and do not metabolise. Broader definitions of life may also include theoretical non-carbon-based life and other alternative biology.
Although it cannot be pinpointed exactly, evidence suggests that life on Earth has existed for about 3.7 billion years [1]. Currently the entire Earth contains about 75 billion tons of biomass (life), which lives within various environments within the biosphere. from http://www.wikipedia.org
greetings. : )
@blacknight000 (1397)
• Philippines
29 Nov 06
life is full of happiness, sufferings, and pains!.. i based it on own experienced from the past and in the future!...