ENVS 1126 FINAL EXAM- LSU Aixin
Hou EXAM QUESTIONS AND
ANSWERS
Anaerobic respiration - Answer- occurs without oxygen and may produce methane
gas or ethanol.
Which one of the following statements is true about methane (CH4)? - Answer-
Methane is an organic molecule and a greenhouse gas.
As environmental systems have declined, human well-being has improved. What is
the most probable reason for this "Environmentalist's Paradox"? - Answer- Enhanced
food production has outweighed declines in ecosystem services.
You watched a video on American Alligator in the Florida Everglades in your
envs1126 class. The alligators play a crucial role in maintaining the integrity of the
Everglades. For this reason, the American alligator is considered a ______species. -
Answer- keystone species
A volcano in the Pacific Ocean has just erupted and created a new island off the
coast of California. After a long period of time, moss will start growing from the rocks
that make up the entire Island. This process is an example of ___. - Answer- Primary
succession
Bacterial denitrification is an anaerobic process that converts NO3- to - Answer- N2
(nitrogen gas)
Which one of the following terrestrial biomes accounts for the greatest percentage of
global surface area? - Answer- Desert
What type of biome would you expect to find in a region where temperatures and
precipitation are high year round? - Answer- tropical rainforest
In logistic growth, how does population growth change as the population nears its
carrying capacity? - Answer- population growth decreases
Which one of the following is not an example of resource partitioning? - Answer-
Male songbirds sing to defend their territory during the nesting season
Which one of the following is not one of the vital concepts that move societies toward
a sustainable future? - Answer- Security
A(n) _____ describes a transitional region where a grassland and forest meet. -
Answer- ecotone
Hou EXAM QUESTIONS AND
ANSWERS
Anaerobic respiration - Answer- occurs without oxygen and may produce methane
gas or ethanol.
Which one of the following statements is true about methane (CH4)? - Answer-
Methane is an organic molecule and a greenhouse gas.
As environmental systems have declined, human well-being has improved. What is
the most probable reason for this "Environmentalist's Paradox"? - Answer- Enhanced
food production has outweighed declines in ecosystem services.
You watched a video on American Alligator in the Florida Everglades in your
envs1126 class. The alligators play a crucial role in maintaining the integrity of the
Everglades. For this reason, the American alligator is considered a ______species. -
Answer- keystone species
A volcano in the Pacific Ocean has just erupted and created a new island off the
coast of California. After a long period of time, moss will start growing from the rocks
that make up the entire Island. This process is an example of ___. - Answer- Primary
succession
Bacterial denitrification is an anaerobic process that converts NO3- to - Answer- N2
(nitrogen gas)
Which one of the following terrestrial biomes accounts for the greatest percentage of
global surface area? - Answer- Desert
What type of biome would you expect to find in a region where temperatures and
precipitation are high year round? - Answer- tropical rainforest
In logistic growth, how does population growth change as the population nears its
carrying capacity? - Answer- population growth decreases
Which one of the following is not an example of resource partitioning? - Answer-
Male songbirds sing to defend their territory during the nesting season
Which one of the following is not one of the vital concepts that move societies toward
a sustainable future? - Answer- Security
A(n) _____ describes a transitional region where a grassland and forest meet. -
Answer- ecotone
