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Why does the number of sunspots change over time? the temperature of the sun increases and decreases over time. the brightness of the sun increases and decreases with time. the sun's magnetic field changes
asked
Feb 11, 2018
Physics
high-school
1
answer
0
votes
24.5k
views
What is multiplication properties. Example a number line that goes from 0-27. Using numbers 6,7,8 and 9.
asked
Jan 14, 2015
Mathematics
high-school
1
answer
2
votes
146k
views
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