1st way is chopping trees for wood. 2nd would be pollution by fossil fuel.
<span>When magma reaches the surface through a volcano, it is called lava. When lava cools, it forms extrusive igneous rock. The process by which rocks are worn down by wind and water, creating sediment.</span>
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The populations become completely separated from one another</span>
Europeans still ship goods using canals and rivers because it is cheaper than using other shiping methods
