What is the biological definition of life?

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The biological definition of life refers to the characteristics and processes that distinguish living organisms from non-living matter. While there are several variations of this definition, the most widely accepted concept is based on the four fundamental principles of life:

1. Organization: Living organisms exhibit a high degree of structural complexity and are organized at various levels, from cells to tissues, organs, and organ systems.

2. Metabolism: All living organisms engage in metabolic activities that involve acquiring, transforming, and utilizing energy to maintain their structures and carry out essential functions.

3. Growth and Development: Living organisms have the capacity to grow and develop, which involves increasing in size and changing in form or structure over time.

4. Reproduction: Living organisms can produce offspring either sexually or asexually, ensuring the continuation of their species.

To determine the biological definition of life, scientists and biologists often examine these characteristics and processes. Additionally, they may also consider other features such as the ability to respond to stimuli, adaptation to the environment, homeostasis (maintenance of internal stable conditions), and the presence of genetic information (DNA or RNA) for heredity.