Describe australian aboriginal culture before european colonization.

Why does physical weathering speed up the processes of chemical weathering? a) physical weathering requires abundant water, as does chemical weathering. b) physical weathering produces fresh surfaces for chemical weathering to attack. c) chemical weathering can occur only on small surfaces, not large ones. d) chemical weathering requires salt, which is provided by salt wedging.

Can someone list any possible solutions to air pollution ?

This word for a bug or malfunction was popularized in the 1962 book into orbit by the mercury astronauts