DDT PESTICIDES

What is the percentage of the people in the world who suffered from malaria in 1950?

• 5%

• 99%

• 2.3%

• 4.3%

Answer explanation

4,3% of the world population suffer malaria in 1950

DDT pesticides are still used in 48% of countries of (a)   , Africa and Asia

Answer explanation

DDT pesticides are still used today in 48% of the countries on South America, Africa, and Asia for the diseases purpose

Who synthesized DDT for the first time

• Othmar Zeidler

• John Wayne

• Paul Hermann

• Athmar Newman

Answer explanation

DDT was synthesized by Othmar Zeidler scientific from Austria  in 1874

how many years ago the humans discovered that crops brings pests that reduce their agriculture productivity

• 200.000 years ago

• 10 years ago

• 100.000 years ago

• 10.000 years ago

Answer explanation

100.000 years ago humans learned how to cultivate plants to eat and discovered agriculture with it they learned that crops brings pests

Sumerians and other civilization used to use crisantelmo flowers and (a)   as pesticide

Answer explanation

Sumerian civilizations as other civilizations used to use crisantelmo flowers and mint as pesticide

Greek's and Roman's used to use sulfuric acid and some .................................. as pesticides

• salt and pepper

• pulverized metals

• chlorine

• wet soil

Answer explanation

Homer from Greece in his books and other books from Rome told us that they used to use sulfuric acid and some pulverized metals as pesticides

The reason why DDT was so widely used was because it is ........................, relatively ............................ to manufacture, and lasts a long time in the environment

(a)  

Answer explanation

The reason why DDT was so widely used was because it is effective, relatively inexpensive to manufacture, and lasts a long time in the environment

Who and When rediscovered the DDT?

• John Wayne in 1948

• Paul Hermann in 1860

• Marie Curie in 1885

• Paul Hermann in 1940