20. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by nuclear fusion, the core becomes unstable and contracts. The outer shellof the star, which is still mostly hydrogen, starts to expand. At this phase the star is called a .
a. White dwarf
b. Red dwarf
c. Red Giant
d. Black hole
Answers: 1
Chemistry, 23.06.2019 00:50, trinityine
50 points! need answer asap. what type of organic compound contains the following functional group? (2 points)
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Chemistry, 23.06.2019 08:30, aaliyahnv07
According to the passage, which of these is true about gray water systems? a) gray water systems use plants that require less water. eliminate b) gray water systems require the use of less fossil fuels. c) gray water systems reduce the amount of fresh water used. d) gray water systems reduce the amount water used by shower heads.
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Chortling is used to clean water. another possible atom that would also work is a. sodium b. sulfur c. bromine
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20. When the hydrogen supply in the core begins to run out, and the star is no longer generating hea...
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