You can use the law of superposition:in horizontal sedimentary rock,the oldest layer is at the bottom.the more layers up is younger than the ones under
D. is the answer
hope i could help
Answer:
B
Explanation:
Acid rain
damaging a marble statue or anything else
is a physical change. <3
Answer:
1 and 3
Explanation:
The vertical columns (groups) of the periodic table are arranged such that all its elements have the same number of valence electrons. All elements within a certain group thus share similar properties.
