When lava cools, which type of rock forms?
a. intrusive
b. extrusive
c. phaneritic
d. porphyritic

Which country is currently the most populated country in the world? a. india b. china c. mongolia d. indonesia

What is one difference between austria and switzerland? a. austria is landlocked. b. austria has more minerals resources c. austria has a strong tourism industry d. austria has a strong dairy cattle industry

Why slip off slopes are found on the inside of meanders? why river cliffs are found on the outside of meanders?