continents, paleoclimate indicators, truncated geologic features, and fossils:D
Answer:
Light does not require any medium to travel because light is a transverse wave
hope it helps
-- If acceleration and velocity are in the same direction,
then the object is speeding up.
-- If acceleration and velocity are in opposite directions,
then the object is slowing down.
-- If acceleration is perpendicular to velocity, then the object
is moving on a circular curve at constant speed.