Answer:
D. The particles of air inside the tire spread out
Explanation:
what does an unconformity in a sequence of rock layers reveal about geologic history?
a. An organism went extinct during that time
b. a layer of rock might have eroded causing a gap in the record
c. the layers of rock cover hundreds of square miles
d. the new rock layers have been deposited very quickly
Rocks in the Earth's mantle contain a higher percentage of _______ and _______ than do rocks in the Earth's crust.
A- silicon and oxygen
B- iron and silicon
C- iron and magnesium
D- magnesium and oxygen