In an unconformity between two layers of rock, how is the upper layer usually described? much younger than the lower layer the same age as the lower layer a little older than the lower layer much older than the lower layer correct answer is much younger than the lower layer

/the first one is the right one :)

hope i helped

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.