Nature’s Microworlds Part 3: Amazon

Nature’s Microworlds Part 3: Amazon
Steve’s team visits the world’s largest and most diverse ecosystem, the Amazon rain forest, whose eponymous stream and countless tributaries contain a fifth of the world’s river water, enough to largely drive its own weather cycle. Its unequaled 3 million known plants and animal species lives in a multi-stores environment, in extremely complex interaction. Only a shallow soil layer contains mineral nutrients, so the huge trees need extra support roots and various symbiosis, especially with mycorrhiza, a type of fungus.