An apple weighs 1 N. The magnitude of net force on the apple when it is in free-fall is
A) 0 N.
B) 0.1 N.
C) 1 N.
D) 10 N.
E) none of the above
C
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What is a correct modification of a physical property of water by changing its salinity?
a. Freezing point increases with salinity. b. Boiling point decreases with salinity. c. Seawater evaporates faster than freshwater. d. Osmotic pressure rises with increasing salinity. e. Heat capacity increases with increasing salinity.
In the United States alone, more than 7 ________ introduced species (not counting microorganisms) have been documented, of which about 15% cause ecological and economic damage
A) hundred B) thousand C) million D) billion E) trillion
Which of the following should contain a brief summary of the map's content or purpose?
A) The title
B) The legend
C) The scale
D) The area within the map's boundaries
E) The data source
Mutations can occur in any cell type, however only those that occur in ____________________ are passed on to offspring, thus allowing for evolution
Fill in the blanks with correct word