Cells grow in a petri dish tend to divide until they form a thin layer covering the bottom off the dish. If cells are removed from the middle of the dish, the cells bordering the open space will begin dividing until they have filled the empty space. What does this experiment show? i. Cell division is a completely random process
ii. Once cells divide, they never divide again
iii. The controls on cell growth and division can be turned off and on
iv. There is only a limited amount of DNA available to a given group of cells

What is the inability of an individual or a society to achieve a minimum standard of living known as ?

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

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