Gap Fill - The Big Bang - Level 5

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   deep      evidence      geologists      great      light      presence      quickly      secrets      slowly      speed   

Paragraph 2

The research has created excitement among planetary . They believe large amounts of helium-3 could unlock of the Big Bang. The scientists are speculating that the of helium-3 could mean that Earth was created much more than we thought. A geophysicist in the USA shed on the possible of Earth's creation. He said: "There is that has been interpreted to say the Earth formed very , requiring 100 million years. [However], you wouldn't get much helium in the Earth if the Earth formed that slowly."

Try the The Big Bang - Level 6 gap fill.

Back to the primordial helium lesson.

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