Adevelopmental psychologist would be interested in studying a. different philosophies about life after death b. psychological changes that occur during adolescence c. different countries that fought during world war ii d. how literature patterns change over centuries

How is coal extracted from mountaintop removal mines? a. dynamite is used to create underground tunnels where miners go to extract the coal. b. dynamite is used to break apart rocks and then draglines are used to remove the broken rock and reach the coal. c. coal in mountaintops is extracted by digging strips in the landscape to reach the coal. d. placer deposits in mountain river bottoms are removed by

Which best describes the difference between internal and thermal energy?

Does current flow through or across a resistor?