Gustav Fechner wanted to mathematically describe the relationship between physical energy and sensation. This became known as .

early settlements on the subcontinent. both the indus and the ganges rivers carried rich silt from the mountains to the plains. when the rivers flooded, the silt spread over the plains and made the soil in the river valleys fertile for farming.

this is called police cynicism. i hope this .

they produces sugar..

hope this , question was a little open ended