What was surprising or interesting to learn about the very small organisms and objects

Explanation:

It is important to remember that the term organism is used to refer to any creature object that has the properties (support) of life.

Hence, it is noteworthy that small organisms and objects although they may not visible to the human eyes are visible when viewed using magnifiers like the microscope.  For example, an amoeba's cell can only be properly viewed by means of a microscope.

plato users

given bodies of water

pacific / arctic / indian / southern

[ a ] the caribbean sea

[ b ] the northern ocean

[ c ] the atlantic ocean

[ d ] the barents sea

with this being the given answers

layer 3 is younger than layer 6.