Human activities and climate change are important factors that affect grassland ecosystems. A new optimization approach. the approach of conditional nonlinear optimal perturbation (CNOP) related to initial and parameter perturbations. is employed to explore the nonlinearly combined impacts of human activities and climate change on a grassland ecosystem using a theoretical grassland mo... https://www.jmannino.com/super-super-University-of-Arizona-Primary-Mark-iPhone-14-Plus-MagSafe-Case-p76978-deal-zone/