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When atoms combine to form heavier atoms, _________ occurs.
fusion
Nicholas Copernicus
Mars
because of its similar size
because of the carbon dioxide in the atmosphere
because of the Sun's gravity
a meteoroid that strikes Earth
increasing density
What caused the dense cloud scientists hypothesize created our solar system to increase in temperature as it condensed?
fusion
Nicholas Copernicus
Mars
because of its similar size
because of the carbon dioxide in the atmosphere
because of the Sun's gravity
a meteoroid that strikes Earth
increasing density
What is a meteorite?
fusion
Nicholas Copernicus
Mars
because of its similar size
because of the carbon dioxide in the atmosphere
because of the Sun's gravity
a meteoroid that strikes Earth
increasing density
Who developed the sun-centered model of the solar system?
fusion
Nicholas Copernicus
Mars
because of its similar size
because of the carbon dioxide in the atmosphere
because of the Sun's gravity
a meteoroid that strikes Earth
increasing density
Why is Venus often called Earth's twin?
fusion
Nicholas Copernicus
Mars
because of its similar size
because of the carbon dioxide in the atmosphere
because of the Sun's gravity
a meteoroid that strikes Earth
increasing density
Why do planets closer to the Sun orbit the Sun faster than planets farther away do?
fusion
Nicholas Copernicus
Mars
because of its similar size
because of the carbon dioxide in the atmosphere
because of the Sun's gravity
a meteoroid that strikes Earth
increasing density
Where do scientists plan on sending astronauts to in the future?
fusion
Nicholas Copernicus
Mars
because of its similar size
because of the carbon dioxide in the atmosphere
because of the Sun's gravity
a meteoroid that strikes Earth
increasing density
Why is Venus hot?
fusion
Nicholas Copernicus
Mars
because of its similar size
because of the carbon dioxide in the atmosphere
because of the Sun's gravity
a meteoroid that strikes Earth
increasing density
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