Some historians compared an old map of a river in a rural area of the Piney Woods to a current map of the same river. The historians observed that the old map showed the river with a different flow pattern from the current map. Which process below explains the change in the river's flow?

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Three cards with holes are arranged in a straight line. a light is shined through the first card’s hole and travels through all three cards. what does this tell you about light rays? a) that light is reflected b) that light is refractive c) that light travels in a straight line d) that light does not travel in a straight line

Why are pipes bursting in the in extremely cold weather?