In the early 1900s, oyster fishermen cut sea stars (starfish), which are predators of oysters, into pieces and threw them back into the sea. This practice led to an explosion in a. other sea stars ate the pieces and were able to increase their reproductive output. b. each arm with a portion of the central disc regenerated into a new individual. c. competition was removed from the stronger sea stars that were not caught, increase their reproductive output. d. the oyster population grew due to this new food supply, allowing the population of their predators to increase. e. each arm could form a new individual through budding.

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