A view of the Amazon rainforest in Ji-Paraná, Brazil, on April 9, 2022. Hotter temperatures and harsher droughts could cause the Amazon’s Indigenous societies to lose many of the species they have used for medicine, rituals, and more, scientists found. (Victor Moriyama/The New York Times) By RAYMOND ZHONG and FLÁVIA MILHORANCE Over centuries, the Amazon’s hundreds of Indigenous societies have built up an abundance of knowledge about the rainforest’s thousands of plant species and how to use…