EROSION.

Terrain and beautiful plain views on Earth have formed under the effect of Erosion through millions of years ago and still affected by natural circumstances like the rain, wind, snow, heat, earthquakes and volcanic activities.

Chamonix French Alps.

Erosion means that rocks crumble and carried away into far distances by wind or water. The fragmentation of the rocks increases with the dissolution of their fragmented pieces

until the rocks become dust,  dust also is classified as per type of rock defragmented.Ice, especially ice rivers is one of the most important decaying tools, since about 1 million year, which is geologically not so far, Earth's north half was fully covered with ice, this period is well known as the "Ice Age".

Ich River.

 To imagine this, the ice was swimming over the mountains and anything in its way was corroded or was subject to fall or break, so the ice carried away everything in its way far distances which reshaped life forms and mixed a lot of species altogether over the ground.

River Delta.

 this happened mostly at top of the mountains when the ice was stacked on mountains top or meltdown, ice vessels released its carriage of organic containers, so it stacked up upon foothill, rocks, boulders, small and big stones after ice meltdown. 

Arizona Grand Canyon.

rivers are the most significant factor in surface corrosion that occurred during the ice age, Water springs from its sources so fast, passing through multi sorts of soils, carrying away multi types of organics, releasing it at various types of destinations and deepening its riverbed and take the trident shape. when the river slows down in wide valleys it leaves behind it stones, clay, slit & gluten slipping down to the Ocean. Wind also is another Erosion factor,

Siwa Sand Dunes.

 it raises up all dust and sands from the surface in order to let other corrosion factors do its work on it. We can find also wind's effect on agricultural lands, it could miss up whole crops season because of sandstorms.

Sea Caves made by sea waves across
millions of years.

 Sea also has a huge effect on the shores, it could wipe out a whole shore with the strength of waves, carrying with it stones & salt, causing shores corrosion and bays, carrying land organics to the bottom of the ocean. At the shore, caves and high rocks appear.