Er Test: High School Earth and Space Science B
Select the correct answer.
The image shows the magnetic polarity involved in seafloor spreading. Which feature is the arrow pointing to?

The comparison of the number of atoms in a copper coin the size of a penny with the number of people on earth is made to illustrate which of the following? a. that atoms are indivisible b. that atoms are very small c. that atoms are very large d. that in a copper penny, there is one atom for every person on earth