Question 1
__________ is the force of the surface that your object is sitting on that counteracts gravity.
Question 2
The two types of friction are __________.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Urine turns bright yellow if larger than normal amounts of certain substances are consumed; one of these substances is asparagus.
It is difficult to obtain enough calcium without consuming milk or other dairy foods.
Asthma cases in Americans are about 75% higher today than they were in 1980.
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