Scientists have observed earths tectonic plates move in predictable directions. what is the cause of this observation? a. uniform pressure inside earths forces the plates to move. b. uniform temperature inside earth forces the plates move. c. variations in temperatures inside earth forces plates to move. d. vibrations in the core forces the plates to move.

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

What are the applications of electromagnetic waves

How do the kidneys affect homeostasis