Answer:
Convection currents drive the movement of Earth's rigid tectonic plates in the planet's fluid molten mantle. In places where convection currents rise up towards the crust's surface, tectonic plates move away from each other in a process known as seafloor spreading.
Explanation:
C they want to keep the air cleaner so they will make it more efficient.
Answer:
The departure of skilled workers can weaken developing countries, especially smaller ones, by depriving them of important skills and workforce. ... Brain drain is also criticised for producing a fiscal burden on the country of origin as it loses out on the skills of a publicly trained and educated workforce.
There is about 500 volcanoes active in Chile.
The answer is D, not all countries recognize it as a sovereign nation
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