«In the current environment of human - caused environmental disturbance and degradation, the discovery of four previously unknown species that are relatively large in size is phenomenal,» he said. (sciencedaily.com)
Examples of environmental disturbances include: (en.wikipedia.org)
Fire occurrence and fire landscapes, unlike other environmental disturbances, can be effectively managed to result in landscapes that either welcome, or discourage, subsequent fires and can offer a comparatively low - cost means of curbing greenhouse - gas emissions in the short and medium term. (dotearth.blogs.nytimes.com)