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- task 4 A caldera is created after a volcano erupts. The eruption blasts away the top of the volcano or causes it to collapse inward. The circular "dent" that results on top of the volcano is a caldera, which can be several kilometers wide. A caldera-causi 70
- integrated3 80
- task 6 70
- tpo 28-6 70
- Sunk costs are unrecoverable spent sums. Continuously using a bad product or following a bad plan for the purpose of not wasting money or time spent on them will actually incure more loss. To stop using a bad product or following a bad plan and invest in 70
21 in 30