Explain which elements are considered when measuring a country’s standard of living. Write your response in complete sentences.

In a scientific experiment, a is any factor that can be changed or be changed

Which of the layers of the earth has the following three characteristics? i. it is made of molten rock. ii. it has currents that are constantly moving. iii. earth’s plates float on top of its currents.

Wegeners theory of continental drift states that the continents have changed throughout history while the theory of plate tectonics