Answer:
The types of energy used in the United States have changed over time. The change has been driven by advances in technology, energy resource discoveries, energy prices, social pressures and other factors. The only constant is that the amount of energy used has increased steadily over time.
Explanation:
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IT is either B or D
as both could happen
Transmission of communicable diseases
Leaving the safety of their trenches and attacking the enemy.
June 28, 1856
you can google this, saves u time
