Highlight the most and least human-modified natural areas.

Probably the most changed can be called the temperate zone, the natural zone of steppes, mixed and deciduous forests. Here man, one might say, has very much interfered with nature, because here they are engaged in agriculture, bred animals and the like, because the climate is ideal. But least of all, man has changed the Arctic and subarctic belts, and the reason for this is very commonplace – the harsh natural conditions in this climatic zone, so that a person simply cannot change it, and there is no need for this.