Early settlers in the town of dry gulch drilled wells to pump as much water as they wanted from the single aquifer beneath the town. (an aquifer is an underground body of water.) as more people settled in dry gulch, the aquifer level fell and new wells had to be drilled deeper at higher cost. residents of dry gulch have a private incentive to water because
a. over use; external costs aren't considered. b. under use; it is a scarce resource. c. over use; it is a scarce resource. d. under use; it is characterized by increasing marginal costs.

1. seamount a raised footwall block between normal fault creates this 2. syncline break between rocks where a hanging wall rises relative to a footwall 3. hot spring on rolling hills, this a dip between hills 4. volcanic neck created when a block with hanging walls slips down between normal faults 5. caldera underwater volcano that never reaches above sea level 6. horst natural hot water on earth's surface containing many minerals 7. graben underwater volcano whose top is eroded flat by waves 8. crater less than a mile in diameter; looks like a bowl at the top of a volcano 9. guyot magma that filled the central vent that remains after the volcano has eroded 10. reverse fault over 1 mile in diameter; looks like a bowl over a volcano

A3 year-old is brought to the burn unit after pulling a pot of hot soup off the stove and spilling it on herself. she sustained 18% second degree burns on her legs and 20% third degree burns on her chest and arms. total body surface area burned is 38%. what icd-10-cm codes are reported for the burns (do not include external cause codes for the accident)?

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.