Secondary Succession - A series of events that occur after a disturbance in an ecosystem., Primary Succession - A series of predictable that occur over time in an area where there was no ecosystem., Environmental Changes - Changes that occur in an ecosystem and affect  organisms, Drought - A severe lack of rainfall in an area over a certain period of time., Flood - Days of heavy rainfall that cause rivers to rise over their banks., Hurricane - An intense storm that forms in the ocean with swirling winds up to 150 miles per hour., Tornado - A spinning column of air with wind speeds up to 300 miles per hour., Wildfire - A large destructive fire that spreads quickly over woodland or bush., Climate Change - A change in global or regional climate patterns, Deforestation - A result of cutting down or clearing all trees in an area.,

Changes in Ecosystem Vocabulary

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