Examlex
The percent of hydrogen in the Sun's core today is roughly half of what it had originally.
Research
The systematic investigation into and study of materials and sources in order to establish facts and reach new conclusions.
Literature Review
A comprehensive analysis and synthesis of existing research and literature on a specific topic, aimed at building a foundation for further research by identifying gaps, debates, and key findings.
Research Model
A framework or systematic plan of action to conduct scientific investigation, guiding the process of inquiry.
Spiral Model
A software development model that combines elements of both design and prototyping in stages, in an effort to combine advantages of top-down and bottom-up approaches.
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