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Author Question: Which of the following is a true statement about DDT, a synthetic insecticide? A) It leads to a ... (Read 79 times)

KWilfred

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on: Jul 2, 2018
Which of the following is a true statement about DDT, a synthetic insecticide?
 
  A) It leads to a concentration in herbivores.
 B) It affects fertility, causes changes in brain functioning, and increases the incidence of cancer.
 C) It breaks down quickly and lasts in soil for 3-5 years.
 D) It is excreted back into the environment by the organisms that consume it.

Question 2

Over time, closed systems tend to lose their ability to function and can eventually stagnate and die. In systems theory this phenomenon is known as:
 
  a. steady state
  b. equifinality
  c. entropy
  d. synergy


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lorealeza

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Reply #1 on: Jul 2, 2018
Answer to Question 1

B

Answer to Question 2

c


KWilfred

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Reply 2 on: Jul 2, 2018
Great answer, keep it coming :)

chereeb

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Reply 3 on: Yesterday
Excellent

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