Author Question: DDT was widely used and remains in use today in some countries to fight malaria by A) killing the ... (Read 72 times)

ss2343 · **on:** Jul 16, 2018

DDT was widely used and remains in use today in some countries to fight malaria by

A) killing the parasite that causes malaria.
B) fouling the water used by mosquitoes for reproduction.
C) killing the virus that causes malaria.
D) killing mosquitoes that are the major malarial vector.

Question 2

Which one of the following actions by scientists is least applicable to the field of environmental science?

A) Scientists determine the best fuel to generate electricity for a growing city in Arizona.
B) Scientists help a rancher determine the best ways to rotate herds of cattle to reduce erosion.
C) Scientists study X-ray emissions for evidence of black holes.
D) Scientists at NASA launch satellites to monitor changes in carbon dioxide production on Earth.