About 2% of Our Solar Nebula Consisted of Elements Besides

question 39

Multiple Choice

About 2% of our solar nebula consisted of elements besides hydrogen and helium.However,the very first generation of star systems in the universe probably consisted only of hydrogen and helium.Which of the following statements is most likely to have been true about these first-generation star systems?

• A)There were no comets or asteroids in these first-generation star systems.
• B)Jovian planets in these first-generation star systems had clouds made of water and other hydrogen compounds.
• C)These first-generation star systems typically had several terrestrial planets in addition to jovian planets.
• D)Like the jovian planets in our solar system,the jovian planets in these first-generation systems were orbited by rings.

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Definitions:

Main Effect

The direct influence of an independent variable on a dependent variable in an experiment.

Simple Effect

A statistical term that describes the effect of one factor at a specific level of another factor within an ANOVA test.

Marginal Mean

The average value of a variable across different levels of another variable, often used in the context of multivariate experiments and statistical analysis.

Men

Adult human males, often mentioned in socio-demographic and health-related research studies.