Chapter 11. Critical Analysis Question

Introduction

Questions 1 & 2

1. 1.

   What is DDT?

   A.

   An insecticide

   B.

   A type of virus

   C.

   A biofuel

   D.

   A parasite

   Correct

   Incorrect

2. 2.

   Which of the following is a major source of mercury pollution?

   A.

   Animal waste from farms

   B.

   Electric vehicle emissions

   C.

   Releases from the burning of coal for energy

   D.

   Insecticide-type spray on agricultural crops

   Correct

   Incorrect

Questions 3 & 4

3. 3.

   Which one of the following statements correctly summarizes characteristics that DDT and mercury share?

   A.

   Both have been shown to be lethal to humans at extremely low doses.

   B.

   Both have been shown to affect organisms in the environment but not humans.

   C.

   Both are forms of antibiotics.

   D.

   Both are known to biomagnify in the environment.

   Correct

   Incorrect

4. 4.

   Select all of the following statements that are false.
   	Both DDT and mercury have been shown to cause health impacts to humans.
   	Both DDT and mercury break down to other hazardous forms in the environment.
   	Both DDT and mercury primarily impact the aquatic food chain.
   	Both DDT and mercury are naturally occurring.

   ::They both have been shown to cause health impacts to humans.: DDT’s primary health impacts for humans are related to the nervous system, and it is a known endocrine disruptor. Mercury’s primary health effects are related to impacts on the central and peripheral nervous systems.::They both break down to other hazardous forms in the environment.: DDT breaks down in the environment to DDE and DDD, and both breakdown forms are considered hazardous to the environment and to humans. Mercury breaks down to another toxic compound, methylmercury, as a result of actions by anaerobic organisms that live in aquatic systems.::They both primarily impact the aquatic food chain.: Mercury, not DDT, primarily affects aquatic food chains.::They both are naturally occurring.: DDT does not occur naturally in the environment but is entirely made by humans. Mercury is found naturally occurring in rocks and soil, and it may be released during volcanic activity.

   4. Which of the following statements correctly summarize characteristics that DDT and mercury do not have in common?

Critical Analysis Question

11.1 Activity Completed!