When does a protostar become a true star?
A) when the star is 1 million years old
B) whe...
Geography, 15.04.2020 01:01 Jingobob442
When does a protostar become a true star?
A) when the star is 1 million years old
B) when the central temperature reaches 1 million Kelvin
C) when nuclear fusion begins in the core
D) when the thermal energy becomes trapped in the center
E) when the stellar winds and jets blow away the surrounding material
Answers: 2
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In the diagram below, ab and bc are tangent to o. what is the measure of
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The fact that similar fossils are found on both sides of the ocean is evidence of: a. global positioning. b. magnetic reversal. c. continental drift. d. oceanic drifts. select the best answer from the choices provided a b c d
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