Examlex
A solar eclipse can only occur when the Moon is ____
Semi-autonomous
Semi-autonomous refers to entities or units that have some degree of independence or self-governance but are still under some level of control or oversight by a higher authority.
NSF
An acronym that stands for the National Science Foundation, a United States government agency that supports fundamental research and education in all the non-medical fields of science and engineering.
Scientific Research
The systematic investigation and study of materials, sources, etc., to establish facts and reach new conclusions.
National Economy
The economic activities and performance of a nation, encompassing its gross domestic product, employment rates, and the balance of imports and exports.
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