What is true about a rock layer deposited on top of another rock layer?
a- it is older than the rock below

b- it is younger than the rock below.

c- it is the same age as the rock layer below

d- it is no different than the rock layer below

Which statement about portugal is not true? a. it granted independence to its last colony in 1975 b. it has avoided conflict with spain c. it was a leader in european world exploration in the 1400s d. its economy is changing from agricultural to industrial b. it has avoided conflict with spain