Sequence the events that led to oxygen becoming part of Earth's atmosphere. _Earth's atmosphere contained carbon dioxide, nitrogen, and
water vapor.

_Rains washed carbon dioxide out of the atmosphere and into
the oceans.

_Early life forms in the seas used carbon dioxide during
photosynthesis.

_Oxygen levels in the atmosphere built up.
_Earth cooled and became more solid.

_Early life forms released oxygen and water vapor.

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

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )

i think its both a and b