Which of the following statements is true with regard to gene flow? Gene flow decreases genetic differences between populations.

Gene flow increases genetic differences between populations.

Gene flow occurs when random events change the gene pool.

Gene flow occurs when non-random events change the gene pool.

To sciences do not agree on which type of grocery bag is better for the environment what is most likely to come out come out of the disagreement

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

Which statement is a physical property? becomes moldy quicklyeasy to digestconducts electricity poorlydoes not burn