Задача по теме: "Понимание структурно-смысловых связей в тексте"

Hard as it may sound to those overcome by the sheer magnificence of this mountain chain, the majestic Himalayas are surprisingly vulnerable to both natural and man-made processes. The mountain chain is young and, A ______, it is still geologically active. The Indian landmass continues to move towards the Eurasian landmass, B ______. Due to this, the Himalayas are still structurally unstable.

The Himalayas also feature a fragile ecosystem. For centuries, this ecosystem has remained delicately balanced, and it has been responsible for the tremendous biodiversity of the Himalayas. However, in recent years the ecosystem has been disturbed in various parts C ______.

Man has also been responsible to a large extent for some of the environmental problems faced by the mountains. D ______, man has disturbed the natural ecosystems of many parts of the world. The Himalayas have been no exception. Over the centuries, pilgrims and explorers have visited the mountains. However, in the past their numbers were few and the Himalayan ecosystem, fragile as it is, was able to cope with the effects of human exploration in the areas.

But today, the story is different. In the last few decades, an intricate network of roads has been built into the mountains, E ______. This has translated into a tremendous increase in the numbers of people F ______. In addition, the Himalayas are now being exploited, to the hilt in many areas, to provide mate- rials for the growing number of forest-based industries. Thus, it is not a surprise that environmental problems have emerged in the Himalayan region.

1. due to processes both man-made and natural
2. who visit the mountains every year
3. as a result of which the Himalayas rise by a few millimetres every year
4. which has made some of the most remote areas more easily accessible
5. as he strives for industrialization and the so-called higher standard of living
6. as has been proved in recent years
7. that may have disastrous effect.