5) The group used as a
standard of
comparison in
which
everything is
kept as natural
or normal as
possible.
OA)
control
group
OB.)
experimental
group
OC.)
independent
variable

well

explanation:

it's c. (to reduce the greenhouse effect/carbon gasses)

emerging idea only occurs as a raw idea that could appear out of nowhere. meanwhile, to reach scientific consensus , that idea must be structured and tested over and over again through various experiments. the scientific consensus transforms the raw idea into idea that is more reliable through the process of scientific elimination.