APES Final Exam 2023-2024 ACTUAL
QUESTIONS AND CORRECT ANSWERS
What is a keystone species? - CORRECT ANSWERS a species on which other species
in an ecosystem largely depend, such that if it were removed the ecosystem would change
drastically.
Abiotic Factors - CORRECT ANSWERS are the non-living parts of an organism's
habitat.
What is the largest reservoir of the nitrogen cycle? - CORRECT ANSWERS
atmosphere
How is nitrogen added to the atmosphere? - CORRECT ANSWERS denitrification by
denitrifying bacteria
Stage 1 of DTM - CORRECT ANSWERS Low Growth: A pre-industrial agrarian
society with a High CBR, High CDR, no population growth
Stage 2 of DTM - CORRECT ANSWERS High Growth: Industrializing society with a
CBR that remains high but stable, a CDR that declines dramatically, and a rapid increase in
population
Stage 3 of DTM - CORRECT ANSWERS Moderate Growth, Rapidly Declining CBR,
Moderately Declining CDR
Stage 4 of DTM - CORRECT ANSWERS Low Growth: A Modern Industrialized
Country with a low CBR, low CDR
Stage 5 of DTM - CORRECT ANSWERS Negative Growth - More Deaths than Births
Aquatic Biomes - CORRECT ANSWERS Water covers nearly 75 percent of the
earth's surface, in the form of oceans, lakes, rivers, etc. These areas can primarily be divided
up into freshwater or saltwater bioimes. Are vital sources of drinking water.
, How is carbon added to the atmosphere? - CORRECT ANSWERS cellular respiration,
volcanic action, burning fossil fuels, decomposition of organic materials
Percent Change Formula - CORRECT ANSWERS Percent Change =(final
value−initial value)/initial value×100
R-Selected Species - CORRECT ANSWERS Species that reproduce early in their life
span and produce large numbers of usually small and short-lived offspring in a short period.
Ex: Invasive Species, insects
K-slected species - CORRECT ANSWERS few offspring, slower growth as they near
carrying capacity and exercise as they near carrying capacity and exercise more parental care
ie: elephant produces one offspring every 4 or 5 years, but nurturing by a herd increase the
likelihood of it surviving to maturity
Tropical Rainforest Biomes - CORRECT ANSWERS have more species than all other
biomes
warm all year long, large amounts of rain, high species richness, low nutrient levels in soil
intertidal zone - CORRECT ANSWERS the narrow band of coastline between the
levels of high tide and low tide
Density-Independent Factors - CORRECT ANSWERS limiting factor that affects all
populations in similar ways, regardless of population size
What roles do decomposers play in the environment? - CORRECT ANSWERS return
nutrients back to the soils
Cultural Ecosystem Services - CORRECT ANSWERS the emotional, psychological,
and recreational benefits that people obtain from nature
provisioning ecosystem services - CORRECT ANSWERS the goods provided by
nature that humans use as food, fuel, drinking water, building materials, and medicines
QUESTIONS AND CORRECT ANSWERS
What is a keystone species? - CORRECT ANSWERS a species on which other species
in an ecosystem largely depend, such that if it were removed the ecosystem would change
drastically.
Abiotic Factors - CORRECT ANSWERS are the non-living parts of an organism's
habitat.
What is the largest reservoir of the nitrogen cycle? - CORRECT ANSWERS
atmosphere
How is nitrogen added to the atmosphere? - CORRECT ANSWERS denitrification by
denitrifying bacteria
Stage 1 of DTM - CORRECT ANSWERS Low Growth: A pre-industrial agrarian
society with a High CBR, High CDR, no population growth
Stage 2 of DTM - CORRECT ANSWERS High Growth: Industrializing society with a
CBR that remains high but stable, a CDR that declines dramatically, and a rapid increase in
population
Stage 3 of DTM - CORRECT ANSWERS Moderate Growth, Rapidly Declining CBR,
Moderately Declining CDR
Stage 4 of DTM - CORRECT ANSWERS Low Growth: A Modern Industrialized
Country with a low CBR, low CDR
Stage 5 of DTM - CORRECT ANSWERS Negative Growth - More Deaths than Births
Aquatic Biomes - CORRECT ANSWERS Water covers nearly 75 percent of the
earth's surface, in the form of oceans, lakes, rivers, etc. These areas can primarily be divided
up into freshwater or saltwater bioimes. Are vital sources of drinking water.
, How is carbon added to the atmosphere? - CORRECT ANSWERS cellular respiration,
volcanic action, burning fossil fuels, decomposition of organic materials
Percent Change Formula - CORRECT ANSWERS Percent Change =(final
value−initial value)/initial value×100
R-Selected Species - CORRECT ANSWERS Species that reproduce early in their life
span and produce large numbers of usually small and short-lived offspring in a short period.
Ex: Invasive Species, insects
K-slected species - CORRECT ANSWERS few offspring, slower growth as they near
carrying capacity and exercise as they near carrying capacity and exercise more parental care
ie: elephant produces one offspring every 4 or 5 years, but nurturing by a herd increase the
likelihood of it surviving to maturity
Tropical Rainforest Biomes - CORRECT ANSWERS have more species than all other
biomes
warm all year long, large amounts of rain, high species richness, low nutrient levels in soil
intertidal zone - CORRECT ANSWERS the narrow band of coastline between the
levels of high tide and low tide
Density-Independent Factors - CORRECT ANSWERS limiting factor that affects all
populations in similar ways, regardless of population size
What roles do decomposers play in the environment? - CORRECT ANSWERS return
nutrients back to the soils
Cultural Ecosystem Services - CORRECT ANSWERS the emotional, psychological,
and recreational benefits that people obtain from nature
provisioning ecosystem services - CORRECT ANSWERS the goods provided by
nature that humans use as food, fuel, drinking water, building materials, and medicines
