Life

Life

Means:

entities having biological processes, such as signalling and self-sustaining processes, from those that do not, either because such functions have ceased, or because they never had such functions and are classified as inanimate. Various forms of life exist, such as plants, animals, fungi, protests, Archean, and bacteria. The criteria can at times be ambiguous and may or may not define viruses, Veradis, or potential artificial life as living. Biology is the primary science concerned with the study of life, although many other sciences are involved.
The definition of life is controversial. The current definition is that organisms maintain homeostasis, are composed of cells, undergo metabolism, can grow, adapt to their environment, respond to stimuli, and reproduce. However, many other biological definitions have been proposed, and there are also some borderline cases, such as viruses. Biophysicists have also proposed some definitions, many being based on chemical systems. There are also some living systems theories, such as the Gaea hypothesis, the idea that the Earth is alive; the former first developed by James Grier Miller. Another one is that life is the property of ecological systems, and yet another is the complex systems biology, a branch or sub field of mathematical biology. Some other systemic definitions include the theory involving the Darwinian dynamic and the operator theory. However, throughout history, there have been many other theories and definitions about life, such as materialism, the belief that everything is made out of matter and that life is merely a complex form of it; homomorphism, the belief that all things are a combination of matter and form, and the form of a living thing is its soul; spontaneous generation, the belief that life repeatedly emerge from non-life; and vital ism, a discredited scientific hypothesis that living organisms possess a "life force" or "vital spark." Agnese's is the natural process of life arising from non-living matter, such as simple organic compounds. Life on Earth arose 3.8–4.1 billion years ago. It is widely accepted that current life on Earth descended from an RNA world, but RNA based life may not have been the first. The mechanism by which life began on Earth is unknown, although many hypotheses have been formulated, most based on the Miller–Urey experiment. In July 2016, scientists reported identifying a set of 355 genes from the Last Universal Common Ancestor (LUCA) of all organisms living on Earth.
Since appearing, life on Earth has changed its environment on a geologic time scale. To survive in most ecosystems, life can adapt and thrive in a wide range of conditions. Some organisms, called extremophiles, can thrive in physically or geochemical extreme conditions that are detrimental to most other life on Earth. Properties common to all organisms are the need for certain core chemical elements needed for biochemical functioning. Aristotle was the first person to classify organisms. Later, Carl Linnaeus introduced his system of binomial nomenclature for the classification of species. Fungi was later classified as its own kingdom. Eventually new groups of life were revealed, such as cells and microorganisms, and even non-cellular reproducing agents, such as viruses and Veradis. Cells are the smallest units of life, often called the "building blocks of life." There are two kind of cells, programmatic and eukaryote. Cells consist of cytoplasm enclosed within a membrane, which contains many bio molecules such as proteins and nucleic acids. Cells reproduce through a process of cell division in which the parent cell divides into two or more daughter cells.
Though only known on Earth, many believe in the existence of extraterrestrial life. Artificial life is a computer simulation of any aspect of life, which is used to examine systems related to life. Death is the permanent termination of all biological functions which sustain an organism, and as such, is the end of its life. Extinction is the process by which a group of tax, normally a species, dies out. Fossils are the preserved remains or traces of organisms.
pictures:

Quotes:

“Don't cry because it's over, smile because it happened.”

Dr. Seuss

“To live is the rarest thing in the world. Most people exist, that is all.”

Oscar Wilde

“It is better to be hated for what you are than to be loved for what you are not.”

André Gide, Autumn Leaves

“There are only two ways to live your life. One is as though nothing is a miracle. The other is as though everything is a miracle.”

Albert Einstein

“Everything you can imagine is real.”

Pablo Picasso

“Who are you to judge the life I live?

I know I'm not perfect

-and I don't live to be-

but before you start pointing fingers...

make sure you hands are clean!”

Bob Marley

“Reality continues to ruin my life.”

Bill Watterson, The Complete Calvin and Hobbes

“Every man has his secret sorrows which the world knows not; and often times we call a man cold when he is only sad.”

Henry Wadsworth Longfellow

“Where there is love there is life.”

Mahatma Gandhi

“There are two basic motivating forces: fear and love. When we are afraid, we pull back from life. When we are in love, we open to all that life has to offer with passion, excitement, and acceptance. We need to learn to love ourselves first, in all our glory and our imperfections. If we cannot love ourselves, we cannot fully open to our ability to love others or our potential to create. Evolution and all hopes for a better world rest in the fearlessness and open-hearted vision of people who embrace life.”

John Lennon

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