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Life exists all over the Earth in air, water, and soil, with many ecosystems forming the biosphere. Some of these are harsh environments occupied only by extremophiles. The life in a particular ecosystem is called its biota.
Life-forms present on Earth today have evolved from ancient common ancestors through the generation of hereditary variation and natural selection.
The meaning of LIFE is the quality that distinguishes a vital and functional being from a dead body. How to use life in a sentence.
LIFE meaning: 1. the period between birth and death, or the experience or state of being alive: 2. for the whole…. Learn more.
A difficult term to define, life can be considered the characteristic state of living organisms and individual cells, or that quality or property that distinguishes living organisms from dead organisms and inanimate objects.
All groups of living organisms share several key characteristics or functions: order, sensitivity or response to stimuli, reproduction, adaptation, growth and development, regulation, homeostasis, and energy processing. When viewed together, these characteristics serve to define life.
Define life. life synonyms, life pronunciation, life translation, English dictionary definition of life. n. pl. lives 1. a. The property or quality that distinguishes living organisms from dead organisms and inanimate matter, manifested in functions such as...
Defining life from the viewpoint of examining its characteristics reveals how much life on Earth has in common, and helps distinguish between living and non-living things.