Today the best approach to fighting malaria in developing countries primarily relies on the
A) widespread application of DDT.
B) use of mosquito nets and DDT.
C) use of mosquito nets but not DDT.
D) antimalarial drugs.
Question 2
Which one of the following sources of energy is both renewable and sustainable?
A) Natural gas used to heat homes
B) Gasoline used to run cars
C) Hydroelectric dams
D) A coal-fired electrical power plant