… ecosystems are vast. Clean drinking water filtered by forests, carbon stored in plants or soil, crop pollination by wild insects, and pharmaceutical uses of plants are just a few … ecosystems are vast. Clean drinking water filtered by forests, carbon stored in plants or soil, crop pollination by wild insects, and pharmaceutical uses of plants are just a few … ecosystems are vast. Clean drinking water filtered by forests, carbon stored in plants or soil, crop pollination by wild insects, and pharmaceutical uses of plants are just a few …