ENVS 1126 FINAL EXAM- LSU Aixin Hou
Anaerobic respiration - ANS-occurs without oxygen and may produce methane gas or ethanol.
Which one of the following statements is true about methane (CH4)? - ANS-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"? - ANS-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. - ANS-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 ___. - ANS-Primary succession
Bacterial denitrification is an anaerobic process that converts NO3- to - ANS-N2 (nitrogen gas)
Which one of the following terrestrial biomes accounts for the greatest percentage of global
surface area? - ANS-Desert
What type of biome would you expect to find in a region where temperatures and precipitation
are high year round? - ANS-tropical rainforest
In logistic growth, how does population growth change as the population nears its carrying
capacity? - ANS-population growth decreases
Which one of the following is not an example of resource partitioning? - ANS-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? - ANS-Security
A(n) _____ describes a transitional region where a grassland and forest meet. - ANS-ecotone
The arapaima is a destructive invasive species in Florida but has not been detected in Louisiana
and it is unknown whether it can survive here. If the government decided to ban the import of
arapaima in Louisiana, this would be an application of: - ANS-The precautionary principle
Anaerobic respiration - ANS-occurs without oxygen and may produce methane gas or ethanol.
Which one of the following statements is true about methane (CH4)? - ANS-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"? - ANS-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. - ANS-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 ___. - ANS-Primary succession
Bacterial denitrification is an anaerobic process that converts NO3- to - ANS-N2 (nitrogen gas)
Which one of the following terrestrial biomes accounts for the greatest percentage of global
surface area? - ANS-Desert
What type of biome would you expect to find in a region where temperatures and precipitation
are high year round? - ANS-tropical rainforest
In logistic growth, how does population growth change as the population nears its carrying
capacity? - ANS-population growth decreases
Which one of the following is not an example of resource partitioning? - ANS-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? - ANS-Security
A(n) _____ describes a transitional region where a grassland and forest meet. - ANS-ecotone
The arapaima is a destructive invasive species in Florida but has not been detected in Louisiana
and it is unknown whether it can survive here. If the government decided to ban the import of
arapaima in Louisiana, this would be an application of: - ANS-The precautionary principle
