What event will eventually move an average star off the main sequence of the H-R diagram?
A. its drift through space due to the gravitational attraction of neighboring giant stars
B. solar wind storms
C. running out of hydrogen, causing gravitational influx, resulting in core temperatures high enough to begin fusing helium
D. surface cooling due to hydrogen loss
Answer: C
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Perpetual resources exist in a fixed quantity or stock in the Earth's crust
Indicate whether the statement is true or false
The straight-line acceleration of winds above a cyclone is called ____________________ ____________________
Fill in the blank(s) with correct word
What have been some of the causes of the increased amount of oil found in the ocean? What is the
largest source of additional oil? What will be an ideal response?