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Health and Natural Sciences Latest Questions

 
over the last 540 million years, ice caps covered at least one of the ...
over the last 540 million years, ice caps covered at least one of the earth's poles during three intervals
Posted by marvinato2000
1
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What is the Doppler effect? Does it mean that there can be a person wh ...
What is the Doppler effect? Does it mean that there can be a person who looks just like you?
Posted by Susana Montero
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Is it okay to use nootropic brain stimulators to boost my studying cap ...
Is it okay to use nootropic brain stimulators to boost my studying capabilities? They are legal, and it seems like they are rather useful.
Posted by Vicente Calvo
1
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Could you please explain clearly what is the length of a light wave an ...
Could you please explain clearly what is the length of a light wave and how is it connected to colors?
Posted by Gabriel Castro
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What is a light year? Our teacher of astronomy said, “... a star locat ...
What is a light year? Our teacher of astronomy said, “... a star located about 30 light years away from Earth.” I’m confused.
Posted by Milla Savela
1
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