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Photosynthesis
The process by which green plants and some other organisms use sunlight to synthesize foods with the help of chlorophyll.
Ecosystem
A biological community of interacting organisms and their physical environment.
Biodiversity
The variety of life in the world or a particular habitat or ecosystem.
Cellular Respiration
A set of metabolic reactions that occur in cells to convert biochemical energy from nutrients into adenosine triphosphate (ATP).
Homeostasis
The tendency to maintain a stable internal environment in an organism.
Natural Selection
The process where organisms better adapted to their environment tend to survive and produce more offspring.
Mutation
A change in the DNA sequence that may lead to changes in protein synthesis and can result in varying traits.
Biochemical Cycle
The cycle through which elements and compounds are recycled in different forms within an ecosystem.