Examlex
Sexual monogamy is the exception rather than the rule among married persons.
Timber-Harvesting
The process of cutting down trees and transporting them to be processed into wood products or used as fuel.
Net Primary Productivity
The rate at which all the plants in an ecosystem produce net useful chemical energy.
Ecosystems
Complex networks of interacting organisms and their physical environment, functioning as a single unit through cycles of matter and energy flows.
Food Chain
A hierarchical series of organisms each dependent on the next as a source of food, illustrating the flow of energy and nutrients from one organism to another.
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