Native Americans came to America from Asia: as far as we know none of the original inhabitants of Americas crossed the Atlantic.
Specifically, they came from North Asia and they entered North America in Alaska.
They crossed the Bering Strait which is between Alaska and Asia.
The exchange rate is not something that you would talk about in the context of population: it most typically refers to the currency exchange between different countries.- the correct answer is b.
Birth and positive migration rate show the increase in a population size and death rate shows a decrease in the population size.
<span>SMCRA stands for the Surface Mining Control and Reclamation Act of 1977 (SMCRA). The SMCRA is a federal law that controls how much the coal mining companies can pollute the environment. The Surface Mining Control and Reclamation Act regulates how old mines are reclaimed in addition to controlling how new coal mines are opened and how they operate.</span>
The lithosphere is the outermost sphere of the solid Earth, consisting of the crust and the upper part of the mantle. The lithosphere is largely important because it is the area that the biosphere (the living things on earth) inhabit and live upon.
If it weren't for the tectonic plates of the lithosphere there would be no change on Earth. Tectonic plates shift due to convection currents lower down in the mantle, and this can cause the formation of mountains, the eruption of volcanoes, and earthquakes. While this can be devastating in the short-run, long term benefits are the formation of new plant life, the creation of new habitats and encouraging adaptation.
It is also the source of almost all of our resources, and is rich in elements like iron, aluminium, calcium, copper and magnesium, which humans have used for tools and machinery for millennia.
When the biosphere interacts with the lithosphere, organic compounds can become buried in the crust, and dug up as oil, coal or natural gas that we can use for fuels.
In combination with the atmosphere and hydrosphere (water), it provides a stable source of nutrients for botanical life, which produce glucose that higher organisms use for sustenance.
