crumbled - Something broke into small pieces, droughts - long periods of dry weather without rainfall, ecosystem - all the living and nonliving things in an area, extinct - something that no longer exists, flourished - something that thrived or grew strong, fragile - something that is delicate and tends to break easily, imbalance - the parts of something are not in an equal, steady, or secure position, ripples - small waves,

Wonders- Grade 4- Unit 2 Week 3 Vocabulary

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