The statements that has or do not have scientific reference, denoted by NONE are:
a) NONE
b) NONE
c) NONE
d) Poultry Science Robson et al (1976) and Jeffries (1969)
e) NONE
f) NONE
Dichlorodiphenyltrichloroethane (DDT) is known to be a kind of an insecticide that is said to be applied and often used in agriculture.
Note that in the United States, there is the banned the use of DDT in the year 1972. But a lot of countries outside the United States are known to often use DDT to control of mosquitoes as well as other insects.
Based on the passage below, The statements that has or do not have scientific reference, denoted by NONE are:
a) NONE
b) NONE
c) NONE
d) Poultry Science Robson et al (1976) and Jeffries (1969)
e) NONE
f) NONE
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