Are impacts the same as results?
impacts/results of global warming

No, they're not exactly the same, but the difference my be a subtle one.

The result of warming is that things get warmer. The impact of warming
is the change that it brings in things that depend on temperature.

Results:
-- The average temperature of the air increases.
-- The average temperature of the oceans increases.
-- The polar ice caps partially or completely melt.
-- The mean sea level rises.

Impacts:
-- Deserts grow in area.
-- Plant and tree species spread farther away from the equator.
-- Some of today's prime farm land becomes barren.
-- The supply of fresh water on Earth is reduced.
-- The average energy in storms is increased.
-- Some of today's coastal land becomes gone.

Ibelieve the answer is c. map projections.hope my answer has you : )