Which human activities cause sudden changes to earth’s surface? choose all answers that are correct: a: planting crops on hillsides. b: erecting wind turbines c: cutting vast areas of forest. d: building tunnels through mountains.

What is a compass? how does it work

What was the most difficult obstacle to overcome in the creation of an autonomous state after indian independence was achieved? a british willingness to go to war to retain the region b. religious differences between hindus and muslims c. ethnic differences between tribal regions d. indian princes' inability to decide on a format of government

5. what is a red giant? can our sun become a red giant? why or why not?