What is a nebula?
A) a vast cloud of dust and gases that contracted 4.5 billion years ago to form our solar system
B) rock fragments that collided together to form the Earth
C) planets that are composed mainly of gases
D) compounds of carbon, nitrogen, oxygen, silicon and iron
E) rocky fragments from outer space that have fallen to the Earth
Correct Answer:
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Q1: Which of the following planets is closest
Q3: The zone of plastic flow in the
Q4: Granite is a rock that is a
Q5: Basalt is a rock that is a
Q6: The Earth's atmosphere is divided into four
Q7: Match the following options to its correct
Q8: Match the following options to its correct
Q9: Match the following options to its correct
Q10: Match the following options to its correct
Q11: Match the following options to its correct
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