Erosion
weathering
Rocks are broken down by physical or chemical weathering.
Small Rocks, and smaller rocks, and even smaller rocks.
Clastic or detrital rocks, depending on size.
Water gets into cracks in the rock, the rock cracks, turns to ice and expands so the rock splits into smaller pieces.. =]
Breccia refers to a rock that is composed of the broken fragments of the rocks or minerals that have been cemented together. The broken fragments of the rocks or minerals are usually cemented together to form a fine grained matrix.
Amino acids and nucleotides
Smaller rocks.
physical weathering is the disintegration of rocks into smaller fragments or pieces.
Yes big rocks are broken by man for their needs, like for roads and houses.
Erosion-waering away of soil and rocks in landforms mostly by water.Exmples: rivers,strems,ice. This can make mountains smaller as the broken fragments moved away.