Atiny insect called the hemlock woolly adelgid is threatening the sustainability of the eastern hemlock in the united states. these insects are native to japan and were introduced to the united states through vehicles carrying wood boxes. the invasive species in this scenario was introduced to the united states through which pathway? a. accidental escape b. intentional release c. climatic conditions d. accidental transport

What statements describe a host organism?

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

What is the ecological role of food chains and food webs