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.
Answer:Democratic deficit' is a term used by people who think that the EU institutions and their decision-making procedures suffer from a lack of democracy and seem inaccessible to the ordinary citizen due to their complexity.
Explanation:
Answer: D
Explanation: Newton’s Law. The more mass two objects have, the greater the force of gravity the masses exert on each other. If one of the masses is doubled, the force of gravity between the objects is doubled.
The USA DOES not have an official language! English is a popular language, but no where in any legal text declares that there is an official language.
