All the great, natural wonders have specific attractions of their own.

D are some of the most amazing landscapes in the world, which are often uninhabited but have a unique (beautiful). Spread over a vast region of Northern Africa, the Sahara is the largest one in the world, being almost as large as the United States. It covers 13 countries and is famous for being extremely hot during the day and freezing at night.

Located on the Isle of Staffa off the west coast of Scotland, Fingal's Cave is one of the world's most popular sea caves. Its unique (构造) is a true work of Mother Nature. The g columns ( 柱形物) form an attractive walkway inviting visitors to explore deep i.

The Tiger Leaping Gorge, one of China's deepest canyons, is surrounded by the Hengduan Mountains. It is divided into three sections: upper, middle, and lower gorges, with a total length of about 20 kilometers. The (narrow) part of the gorge is just 30 meters wide so that a tiger can jump over the gorge, from which the name comes. Along the gorge, there are ten waterfalls. The c in Tiger Leaping Gorge is complex ( 复杂的) and changeable. The best time to visit the Tiger Leaping Gorge is in April, May, September, and October, which is usually the dry season.

Natural resources have greatly benefited human beings. On average, a person in Europe consumes about 36kg of resources per day, a person in North America consumes about 90kg per day, a person in Asia consumes about 14kg and a person in Africa consumes about 10kg of resources per day.

The three major forms include food and drink, transport (运输工具), and housing and infrastructure (基础设施), which together make up more than 60% of resource use.

Food and drink

This includes agricultural products as well as naturally occurring foods such as fish from freshwater and seas, herbs and medicines, plants, and so on. It is clear that humans' life depends entirely on natural resources.

Transport

This includes cars, trains, airplanes, and so on, together with all the fuel (燃料) that powers them. Nothing can be done without materials from nature.

Housing and infrastructure

Think about all the houses, public places, roads in your city or town. It is not hard to understand where all the wood, metals, stone and other materials come from.

Beyond these three major areas of resource consumption, we consume much more from our environment. Therefore, we must protect the environment which provides us with such valuable resources.