Answer:
For low-mass stars, after the helium has fused into carbon, the core collapses again. As the core collapses, the outer layers of the star are expelled. A planetary nebula is formed by the outer layers. The core remains as a white dwarf and eventually cools to become a black dwarf.
Exchange rate: this refers to currency
Answer:
During El Niño, the jet stream is oriented from west to east across the southern portion of the United States. Thus, this region becomes more susceptible to severe weather outbreaks during the winter. Conversely, during La Niña, the jet stream and severe weather are likely to be farther north.
Explanation:
As the Options are
A) It is a well supported description.
B) It is a well supported explanation.
C) It is a fact in nature which is not supported by data.
D) It is a fact which is observable to all and remains undisputed.
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Answer</h2>
The answer is (D)
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Explanation</h2>
Old scientists believed that the earth is stationary and the sun revolves around the earth. Then the Newton came in this field and told if the earth is stationary why the things from the space fall toward the earth. He believed in Heliocentrism model and told that the earth is orbiting around the sun and its motion is creating the gravitational pull to attract the things toward itself. But this puzzle is still under consideration to know better about sun and earth. So, the option (D) will be the answer to it.
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Less developed nations are to extended families as more developed nations are to nuclear families.
Less developed nations are the opposite of more developed nations. Following this analogy, we can conclude that extended families are opposite of nuclear families.
Extended families include your grandparents, ants, cousins, etc., whereas a nuclear family is just your and your siblings, with parents.
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