Answer:
Asthenosphere
Explanation:
The asthenosphere is the part of the lithosphere that flows and moves the plates of the Earth.
Answer:
Scientists are able to understand Earth's interior by studying seismic waves.
Seismic waves travel at different speeds when they pass through different types of material, so by studying seismograms, scientists can learn a lot about Earth's internal structure.
In the socialist systems the state shares economic control with private enterprise.
Explanation:
The socialist systems are systems where the economy is of mixed type. This is due to the transitional nature of the socialist system, so it has elements of both the system from which it is moving away, and from the system toward it is striding to. In general, it is traditional or market economy from which this system is moving away and transforms into communism, though there are few exceptions that are in the opposite manner.
While the private enterprises are allowed to exist and prosper, there are some limitations, as they are often obligated to be business partners with the state and have to stick to the state's rules. Also, the state is a powerful player on the market, owning and controlling the most important resources and infrastructure.
Oil is the anwser because it is man made and natural and humans will need it a lot in the future
