7 Bilder zum Thema "limnologie" bei ClipDealer

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Measuring water quality
A chaotic tangle of lily pads grows wild in a shallow pond on Cape Cod, Massachusetts. Ponds and lakes cover about 2% of the planet's surface but contain most of the world's freshwater.
Very frequent representatives in the local dredging lakes.
River near Puyuhuapi Carretera Austral
Measuring water quality
Cyclops
Measuring water quality

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