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What is 1 + 3?
The place in which an organism lives.
Substances that are reuired by plants and animals for energy, growth, development, repair, or maintenance.
A chemical reaction that converts solar energy into chemical energy usable by plants.
All members of a particular species within an ecosystem.
All the populations of the different species that interact in a specific area or ecosystem.
The order of biotic interactions and relationships in an ecosystem.
IT has abiotic components that interact with biotic components.