Geography- How does change affect ecosystems

How does change affect ecosystems?

ecosystems take thousands of years to develop their sustainable balance.

yet global scale chnages and small scale chnages can stlll upset this balance

Ntaural changes

extreme weather events like droughts can be devastating to freshwater ponds, killing fish,plants, and birds that are dependant upon them.

Changes due to human activities

agriculture fertilisers can lead to eutrophication, nitrates increase growth of algae which will use up oxygen and fish may die

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