The Core of a Proto-Star Remains Relatively Cool Until Which

question 19

Multiple Choice

The core of a proto-star remains relatively cool until which of the following happens?

• A)The star becomes opaque
• B)Nuclear reactions begin
• C)The chemical composition of the star changes
• D)Its spin slows significantly

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Donald Kirkpatrick

The creator of a widely used model for evaluating the effectiveness of training programmes, consisting of four levels: reaction, learning, behaviour, and results.

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