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 …

Dec 13, 2025 · Life-forms present on Earth today have evolved from ancient common ancestors through the generation of hereditary variation and natural selection.

LIFE definition: the condition that distinguishes organisms from inorganic objects and dead organisms, being manifested by growth through metabolism, reproduction, and the power of adaptation to …

Nov 30, 2021 · As such, the nature of life continues to be a hotly debated topic. This article focuses on the subject matter of biology: life. The first half of this article will focus on attempts to characterize life …

LIFE definition: 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 …

If you refer to someone's life, you mean their state of being alive, especially when there is a risk or danger of them dying. Your life is in danger. A nurse began to try to save his life. The intense fighting …

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.

Meaning of life The meaning of life is the concept of an individual's life, human life, or existence in general having an inherent significance or a philosophical point. There is no consensus on the …

Definition of life noun in Oxford Advanced American Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.