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phenomenon – something that happens in nature that is interesting or unusual
- temperature – how hot or cold something is
- affects – changes or has an effect on something
- takes place – happens
- serious – very bad or important
- region – a large area of a country or the world
- dry out – becomes very dry with no water or rain
- ran out of – had no more of something
- monitor – to watch and check something carefully over a period of time
- find out – discover new information about something