Many centuries before the advent of agriculture in Norway, ancient people transported fish into mountain lakes to create a source of food, then built wooden traps to catch them
Več na: https://www.newscientist.com/article/2580119-hunter-gatherers-introduced-fish-to-a-mountain-lake-7000-years-ago/?utm_campaign=RSS|NSNS&utm_content=home&utm_medium=RSS&utm_source=NSNS
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