Icy Life

Life

Life is the capacity in matter, formed of one or more units called cells, for processes such as cell signalling, homeostasis, metabolism, cell growth, adaptation, response to stimuli, and reproduction. All life eventually reaches a state of death. Many philosophical definitions of living systems have been proposed, such as self-organising systems. Defining life is further complicated by viruses, which replicate only in host cells, and the possibility of extraterrestrial life, which could be very different from life on Earth. 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.

icy

Adjective

1. Pertaining to, resembling, or abounding in ice; cold; frosty.
2. Covered with ice, wholly or partially.

life

Noun

1. The state of organisms preceding their death, characterized by biological processes such as metabolism and reproduction and distinguishing them from inanimate objects; the state of being alive and living.
2. The status possessed by any of a number of entities, including animals, plants, fungi, bacteria, and sometimes viruses, which have the properties of replication and metabolism.

Verb

1. To replace components whose operational lifetime has expired.