Which statement best describes an environmental consequence of unsealed landfills? Landfills can produce carbon dioxide that leak into the atmosphere. Long-term exposure to mercury and lead in landfills can cause cancers.
Heavy metals are released as leach ate into surrounding waterways.
Materials in landfills undergo decomposition for hundreds of years.

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

Math focus 4. calculate a map has index contours at 250 m, 500 m, and 750 m. what is the contour interval?

which is an effect of short-term environmental changes? a) adaptation b) speciation c) extinction d) death (5 points)