Answer:
constructive plate boundaries cause volcanoes.
Explanation:
Well, if you mean layers of the earth than the 1st one would be crust the second would be the mantle and the third would be the outer core.
Answer: Bassically, certain gasses like CO2 (Carbon Dioxide) that come from stuff like burning fossil fuels and global warming, they heat up the earth, are wastes and are used as fuel.
Hey there,
Around 52 tornadoes per year
But 126 tornadoes in average per year.
Hope this helps :)
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