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Speaking reference notes: This topic is refereed from another speaking topic, developed by user: hossein021
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Speakings by user nishith
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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
- Which could be the best invention of humankind? 33
- tpo 10 task 6
- task 6 70
- tpo 9 task 4 60
26 in 30
Great!