What was unique about the physical geography of the Oaxaca Valley? It contained a vast system of caves.
o It sat on top of an active volcano.
It sat thousands of feet above sea level.
O It contained mostly swamps and jungles.

It Sat on top of an active Volcano

Explanation:

I'm pretty sure it is B.) It sat on top of an active volcano

Explanation:

Edge 2021 :)

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on