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 …

Jan 21, 2026 · 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.

4 days ago · Mind How to live a meaningful life, according to science The meaning of life has puzzled philosophers for millennia, but new research suggests it could be as simple as lending a helping …

Nov 30, 2021 · In the Phaedrus, Timeaus, and Republic, Plato divided life into three parts: vegetable life, animal life, and rational life. All living creatures possessed the first in the form of nutrition and …

LIFE meaning: 1. the period between birth and death, or the experience or state of being alive: 2. for the whole…. Learn more.

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 …

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 …

1. Of or relating to animate existence; involved in or necessary for living: life processes. 2. Continuing for a lifetime; lifelong: life partner; life imprisonment. 3. Using a living model as a subject for an artist: a …

9 Definition of Life Biology is the branch of science concerned with the study of living things, or organisms. That definition is pretty straightforward. However, it opens the door to more difficult—and …