What is it called when rainwater contributes to the flow of rivers and streams?

What is the difference between external & internal migration

Agrid shows the positions of a subway stop and your house. the subway stop is located at (7, -7) and your house is located at (-3, 3). what is the distance, to the nearest unit, between your house and the subway stop? answersa-24b-19c-11d-14

How has the geography of india made it difficult for its people to expand before modern technology?