ENVS 1126 test 1 LSU
Which one of the following is not one of the three main trophic categories? - ANS-a. transformer
The ecological efficiency in a food chain is 15%. A pollutant (X) is transferred from one trophic
level to the next with an efficiency of 30%. The concentration of X on trophic level 2 is 4 ppm.
What is the concentration of X on trophic level 4? - ANS-d. 16
The Montreal Protocol was an international agreement to phase out the production of - ANS-a.
Chlorofluorocarbons
The three crops that account for about 50% of global food demands are - ANS-b. rice, wheat,
and corn
The cost/benefit ratio associated with the implementation of environmental regulations - ANS-d.
increases with time
Which one of the following is not an example of a mechanism to escape predation? - ANS-d.
Exotic plumage of peacock
Which one of the following is not an example of mutualism?
Select one: - ANS-d. Cattle egrets and water buffalo
Deterioration of which of the following ecosystems has been attributed in part to extensive
changes of the inputs of water to or withdrawals of water from the system? - ANS-d. Rio Grande
River and Florida Everglades
Which one of the following is an example of primary succession?
Select one: - ANS-c. Lichens appear on basalt rock 50 years after a volcanic eruption on the Big
Island of Hawaii
Which one of the following international agreements assures that wealthy nations cannot mine
the genetic resources of other countries and then patent products that indigenous people have
used for millennia?
Select one: - ANS-d. The Convention on Biological Diversity
Current rates of extinction of species are estimated to be roughly ___________ rates of
extinction prior to the Anthropocene.
Select one: - ANS-a. 100 to 1000
Consider the following statements: (I) In any energy conversion, some of the usable energy is
always lost (II) Energy is neither created nor destroyed, but it may be converted from one form
Which one of the following is not one of the three main trophic categories? - ANS-a. transformer
The ecological efficiency in a food chain is 15%. A pollutant (X) is transferred from one trophic
level to the next with an efficiency of 30%. The concentration of X on trophic level 2 is 4 ppm.
What is the concentration of X on trophic level 4? - ANS-d. 16
The Montreal Protocol was an international agreement to phase out the production of - ANS-a.
Chlorofluorocarbons
The three crops that account for about 50% of global food demands are - ANS-b. rice, wheat,
and corn
The cost/benefit ratio associated with the implementation of environmental regulations - ANS-d.
increases with time
Which one of the following is not an example of a mechanism to escape predation? - ANS-d.
Exotic plumage of peacock
Which one of the following is not an example of mutualism?
Select one: - ANS-d. Cattle egrets and water buffalo
Deterioration of which of the following ecosystems has been attributed in part to extensive
changes of the inputs of water to or withdrawals of water from the system? - ANS-d. Rio Grande
River and Florida Everglades
Which one of the following is an example of primary succession?
Select one: - ANS-c. Lichens appear on basalt rock 50 years after a volcanic eruption on the Big
Island of Hawaii
Which one of the following international agreements assures that wealthy nations cannot mine
the genetic resources of other countries and then patent products that indigenous people have
used for millennia?
Select one: - ANS-d. The Convention on Biological Diversity
Current rates of extinction of species are estimated to be roughly ___________ rates of
extinction prior to the Anthropocene.
Select one: - ANS-a. 100 to 1000
Consider the following statements: (I) In any energy conversion, some of the usable energy is
always lost (II) Energy is neither created nor destroyed, but it may be converted from one form
