1. Ice wedging is to mechanical weathering as weathering
A) chemical weathering
B) environment
C)mechanical weathering
D)oxidation
E)Weathering

i am going to guess that it is co2.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.