3
300
30
none
To control insects
They don't need bees.
To pollinate their crops.
To make honey.
Increased 70 percent
Decreased 70 percent
Decreased 7 percent
Remained the same
Kill all Honey bees.
Increase the Africanized bee population.
Kill all Africanized bees.
Decrease the population of both Africanized and Honey bees.
By using the chemical Apistan.
By having bee doctors treat their bees.
By killing all the Aficanized bees.
By breeding hives that show the greatest resistance to mites.
1990
1980
1983
1993