Examlex
One of the advantages of active transport is that it can move materials up,or against,its concentration gradient.
Investment
The allocation of resources, often money, into assets or projects with the expectation of generating profit or income.
Marginal Costs
The increase in the sum total of expenses that comes with the production of one additional unit of a product or service.
Resources Are Scarce
The fundamental economic problem that the available resources are limited compared to the unlimited wants and needs of people.
Economic Theories
Comprehensive frameworks or models used to explain and predict economic phenomena and guide the analysis of economic issues and policy.
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