Biology, 10.02.2020 17:20 marofthejt9089
According to the nebular theory, a solar system begins when an interstellar cloud, containing approximately 75% hydrogen, 25% helium and traces of other elements, begins to form areas of higher concentration, or clumps. What is initially responsible for the formation of the clumps of matter within this interstellar cloud?
A) kinetic energy
B) different densities
C) gravitational attraction
D) extremely high temperatures
Answers: 3
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Which line in the graph above best illustrates an effect of the carbon dioxide level in the blood on breathing rate before, during and after a period of exercise? 1.b,2.c,3.a,4.d
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According to the nebular theory, a solar system begins when an interstellar cloud, containing approx...
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