As the sun, air, water and plants to change shape of the Earth?

Sun directs air, water and all plants on Earth. If it were not for their work, the surface of our planet would have a different look. Take, for example, a stone cliff. Afternoon sun warms the surface, but at night it cools rapidly. The substance from which this rock is exposed to the expansion and contraction. With time on the surface of the rock cracks. Then they go deep and break away from a monolithic block of large and small pieces. The wind blows these fragments. Water penetrates into the cracks formed, and more destroys the stone. But the destruction of rocks quite a long process. Much faster than changing face of the desert. There are almost completely hosts wind. After the sandstorm desert species completely changed. Within a few hours the wind carries great mass of sand from one place to another. In those places where there are no mountains or deserts hosted rivers and streams. They are moving along the earth's surface, erode it, and form a river valleys, gullies, ravines and gullies. In the prairies of the Great Plains of the United States has vast scenic spots. Here the air and water are dug in the earth's surface vast kilometers-long passes, which are called canyons. The depth of some canyons several hundred meters. The walls of these canyons are very steep. They consist of soft limestone rocks. These walls do not hang over the passage as a visor because he did not sustain his weight and immediately collapses. Do not remain indifferent to the destruction of rocks and some plants. On bare rocks settle lichens. Wind captures their tiny spores into the cracks and they grow tightly attached to the stone, gradually eating away at him. Ages have passed and all these natural forces beyond recognition to modify the surface of the ridge, rock, single stone.