The silt from the nile river has been used as a crop fertilizer for thousands of years. after the construction of the aswan high
dam, which of the following occurred?
a. more silt was carried down river, jamming electrical turbines and preventing the dam from generating
electricity.
b. more silt was carried down river, and agricultural production increased as a result.
c. less silt was carried down river, so farmers began to use more chemical fertilizers.
d. less silt was carried down river, protecting the nile river delta from further damage.