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 is everything that happens: When people say, "That's life," they mean all the events and tendencies, the human condition itself. You might hear about "city life" — or "country life" for that matter — meaning the habits and expectations of inhabitants of a particular place.
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.
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.
Life is matter that can make more of itself. It is separated by non-living matter. Most life on Earth is powered by solar energy: the only known exceptions are the chemo-synthetic bacteria living around the hydrothermal vents on the ocean floor.
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.