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for someone older than 10 years, how many times per minute does an average heart beat?
what bones protect your heart?
what does your cardiovascular system do?
what is the closest star to earth?
the moon casts a shadow on earth during the ______.
what causes tides?
what attaches muscles to bones?
if pablo divides 111,111 by 11 what number does he get?
the flag of the European Union features a circle of how many stars?
how many teaspoons are in five tablespoons?
fill in the blank: 1/10 is to ten percent as 1/4 is to what percent?
how many electrons does an atom of carbon have?
what would a draftsman use to copy her artwork?
A. Marble
B. Printing
C. Oil and canvas
D. Ceramics
A. Marble
B. Printing
C. Oil and canvas
D. Ceramics
what typically green chemical found in plants uses photosynthesis to turn sunlight into energy?
