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Number the steps of stellar evolution in the correct order. 1.step 1 nuclear energy runs out; death; possible supernova. 2.step 2 cloud collapses under the force of its own gravitational attraction; usually triggered by a supernova. 3.step 3 other gas and matter of the nebular cloud begin to rotate around the protostar, forming a flattened, disk. 4.step 4 nebular cloud of gas and dust. 5.step 5 stellar core heats as it grows; nuclear fusion begins and a star is born. 6.step 6 condensed material begins to combine and form a core center. as it warms, a protostar is formed.
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Number the steps of stellar evolution in the correct order. 1.step 1 nuclear energy runs out; death...
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