By observing how seismic waves are absorbed and refracted, scientist have been able to work out where the properties of the earth change dramatically. our understanding of the internal structures of the earth and the size of its core is based on these observations.
basically:
size of core
structure of the earth I.e. the layers of the earth
and I think the last one is how the internal structure is changing? not sure on the last one but its still a solid guess.
The correct Answer is A. Crude oil and coal together account for more than half of the world’s energy.
Answer:
A, B, and D should be the correct answer
Explanation:
Answer:
B. The high temperature yesterday in Columbia (measured in degrees Fahrenheit).
Explanation:
An interval variable is a one where the difference between two values is meaningful. The difference between a temperature of 100 degrees and 90 degrees is the same difference as between 90 degrees and 80 degrees.
