How did the use of pesticides and chemical fertilizers affect the farming industry? a they improved the nutrition in foods. b they caused commercial farms to shut down family farms. c they provided a greater array of foods. d all of the above

I can see more than one option here so my guess is D. all the above

hope this was right!

during the 20th century, the role of the vice president has evolved into more of an executive branch position. now, the vice president is usually seen as an integral part of a president's administration and presides over the senate only on ceremonial occasions or when a tie-breaking vote may be needed.