Answer:
Convergent should go above ocean floor and continent, because the two forces are converging together.
Divergent should go above ocean floors, because these two ocean floors are diverging apart. Trench should precisely go below this point because these divergent forces are what are forming the trench.
Finally, the Volcanic Arch should go above what looks like a schematic mountain range, in the same place where convergent should be written.
Personally, I see it as a mixture of both a and b but my first instinct was to go with b.
Answer:
telescopes
Explanation:
Astronomical observatories have been available since ancient times, and many cultures set aside special sites for astronomical observations. The thing modern observatories have that was missing from these older observatories until about 1610 was telescopes. With the invention of telescopes in 1610, astronomer could more precisely study the locations and the movement of the planetary bodies
