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Researchers are increasingly using the World Wide Web to conduct experiments
Developed Countries
Nations with a high level of economic development, typically characterized by a high gross domestic product (GDP) per capita.
Leveled Off
A state where a variable, after a period of growth or decline, stabilizes and shows no significant change.
Biodiesel
A renewable, clean-burning diesel substitute produced from a variety of biomass sources, such as vegetable oils and animal fats.
Economically Viable
The ability of a project or business to generate a profit or sufficient benefits to cover its expenses and provide a return on investment.
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