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 …

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 …

Nov 30, 2021 · A wide range of practices rely on competing conceptions of life: including artificial life, origins-of-life research, the search for life, and other projects described above.

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 …

Oct 7, 2024 · What Is the Meaning of Life? The meaning of life is that which we choose to give it. Reliance on an eternal afterlife only postpones the question of life’s purpose. Even if life does not...

4 days ago · life (usually uncountable, plural lives) (uncountable) The state of organisms preceding their death, characterized by biological processes such as metabolism and reproduction 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 …