Examlex
Which layer of cyberspace includes the creation and distribution of information and interaction between users?
Autotrophs
Organisms that can produce their own food from inorganic substances using light (photosynthesis) or chemical energy (chemosynthesis).
Heterotrophs
Organisms that cannot synthesize their own food and rely on other organisms — either plants or animals — for nutrition.
Nutrient
Substances obtained from food necessary for growth, metabolism, and for other body functions.
Ecosystem
Biological community together with the associated abiotic environment; characterized by a flow of energy and a cycling of inorganic nutrients.
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