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2. Life - Wikipedia

   en.wikipedia.org/wiki/Life

   Life is a quality that distinguishes matter that has biological processes, such as signaling and self-sustaining processes, from matter that does not. It is defined descriptively by the capacity for homeostasis, organisation, metabolism, growth, adaptation, response to stimuli, and reproduction. All life over time eventually reaches a state of ...

3. History of life - Wikipedia

   en.wikipedia.org/wiki/History_of_life

   The history of life on Earth traces the processes by which living and fossil organisms evolved, from the earliest emergence of life to present day. Earth formed about 4.5 billion years ago (abbreviated as Ga, for gigaannum) and evidence suggests that life emerged prior to 3.7 Ga. [1] [2] [3] The similarities among all known present-day species ...

4. Nature - Wikipedia

   en.wikipedia.org/wiki/Nature

   These life forms possessed the basic traits of self-replication and inheritable traits. Once life had appeared, the process of evolution by natural selection resulted in the development of ever-more diverse life forms. Species that were unable to adapt to the changing environment and competition from other life forms became extinct.

5. Natural science - Wikipedia

   en.wikipedia.org/wiki/Natural_science

   Natural Sciences Contains updated information on research in the Natural Sciences including biology, geography and the applied life and earth sciences. Reviews of Books About Natural Science This site contains over 50 previously published reviews of books about natural science, plus selected essays on timely topics in natural science.

6. Wildlife - Wikipedia

   en.wikipedia.org/wiki/Wildlife

   Wildlife tourism is an element of many nations' travel industry centered around observation and interaction with local animal and plant life in their natural habitats. While it can include eco - and animal-friendly tourism, safari hunting and similar high-intervention activities also fall under the umbrella of wildlife tourism.

7. List of life sciences - Wikipedia

   en.wikipedia.org/wiki/List_of_life_sciences

   This science is one of the two major branches of natural science, the other being physical science, which is concerned with non-living matter. Biology is the overall natural science that studies life, with the other life sciences as its sub-disciplines. Science plays a crucial role in our everyday lives, often without us even realizing it.