The correct answer is letter B.
Explanation: Even for the best studied star we can only measure 4 parameters: mass, luminosity, radius and chemical composition of the outer layers. We can determine the structure of the star with these parameters, because we have one more condition: the constancy of the stars over long periods of time. Even variable stars have long-term stability of the average structure. The existence of fossil algae on the earth over 1 billion years old and fossils up to 3.5 billion years old is evidence that the temperature of the earth cannot have changed by more than about 20 ° C. Therefore, the interior of the stars must be in perfect balance.
Answer:
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Explanation:
One player puts one end of the stick inside the hole and holds the other end. The player uses the stick against the pin to launch the pin into the air while other players called 'fielders' try to catch the pin. If one of the fielders catch the pin in the air, the turn is over and the catcher takes the stick.
<span> President Reagan
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Answer:
.d.unlimited contributions by PACs to any one federal candidate.
Explanation:
All of the following are loopholes in the current federal election laws EXCEPT unlimited contributions by PACs to any one federal candidate.
