Examlex
The hydrogen lines of spectral type A main sequence stars are ____.
Basic Needs
Fundamental requirements that serve as the foundation for survival, including food, water, shelter, and safety.
Financial Satisfaction
The feeling of contentment with one's financial situation, encompassing aspects like earnings, savings, and debt levels.
Evolutionary Theory
A scientific explanation for the diversity of life on Earth, asserting that species change over time through processes such as natural selection.
Wealthy Nations
Countries with a high level of economic prosperity and standard of living, often measured by GDP per capita.
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