1 Slowness-bradykinesia (slow movement) and akinesia (inability to move) are common in people with Parkinson's disease. 2  This is a hypokinetic disorder characterized by hypokinesia or akinesia, rigidity, and a rhythmic fine tremor at the rate of 3-6 cycles per second. Slowness-bradykinesia (slow movement) and akinesia (inability to move) are common in people with Parkinson's disease. 2  This is a hypokinetic disorder characterized by hypokinesia or akinesia, rigidity, and a rhythmic fine tremor at the rate of 3-6 cycles per second.
The conditions deep in the earth are different enough that these different conditions cause minerals different from those which form at the surface. For example, surface weathering process, which is also a change of the types of minerals causes hard rocks to change into small crumbly pieces.
Now chemical weathering is changing the rock mineral so that the sides of the crack are filled with loose grains. You can see the tufts of plants growing in the loose grains of rock. Figure 11.6: An old marble statue. Notice that the face of the statue has been worn down by chemical weathering. chemical weathering - weathering of rock that involves