The nuclei of atoms contain
a. electrons only.
b. neutrons only.
c. protons and electrons.
d. protons and neutrons.
d
Physics & Space Science
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Which of these is NOT a result of plate tectonics?
A) the Mid-Atlantic Rift B) the Philippine Trench C) the San Andreas Fault D) the Grand Canyon E) the Andes
Physics & Space Science
During its formation, Mars cooled quickly because it is a small planet
a. True b. False Indicate whether the statement is true or false
Physics & Space Science
The Eocene is a(n)
a. epoch. b. era. c. eon. d. period.
Physics & Space Science
A spool has string wrapped around its center axle and is sitting on a horizontal surface. If the string is pulled in the horizontal direction when tangent to the top of the axle, the spool will