BIO182 NAU EXAM 1 | WITH QUESTIONS
AND ANSWERS WITH VERIFIED
SOLUTIONS 100% CORRECT | RATED
A+ | 2025 NEW UPDATE
What is TFR and how does it influence the predictions on future human population?
ANSWER ✔✔ Total Fertility Rate: Average number of live births a woman has during her
lifetime. Shows population growth.
What are the 4 main human caused factors to the loss of biodiversity?
ANSWER ✔✔ Habitat Destruction, Invasive Species, Pollution, Overexploitation
What is Biomagnification?
ANSWER ✔✔ Tendency of certain chemicals to accumulate or build up within food chains
What is the other name for the global water cycle?
ANSWER ✔✔ Hydrological cycle
Where does most of the water that reaches the atmosphere come from?
ANSWER ✔✔ Evaporation and transpiration
How have humans influenced the water cycle?
ANSWER ✔✔ Hydroelectric dams, tapping aquifers, deforestation, estuaries, losing
evapotranspiration
What are the 3 main biogeochemical cycles we discussed?
ANSWER ✔✔ Carbon, Phosphorus, and Nitrogen
, What is the definition of a community?
ANSWER ✔✔ Assemblage of many populations that live in the same place at the same time
What is Species richness?
ANSWER ✔✔ Number of different species in each community
What is Species Diversity?
ANSWER ✔✔ The variety of species that make up the community
What is the difference between Species Diversity and Richness?
ANSWER ✔✔ Species diversity includes abundance and evenness, unlike richness which counts
only number of species
What is the role of metagenomics in helping estimate species diversity? What types of
organisms does it really help this task for?
ANSWER ✔✔ Helps find diversity of microorganisms by collecting microbial genomes and
using cultures
Explain the intermediate-disturbance hypothesis.
ANSWER ✔✔ Communities with intermediate levels of disturbance maintain the highest
number of species
What are disturbances? Give some examples.
ANSWER ✔✔ Events like droughts, fires, hurricanes, and species interactions such as
herbivory, predation, or parasitism
What is the name of the process that occurs after disturbances where the system tries to
reset itself?
ANSWER ✔✔ Ecological Succession (Primary and Secondary)
AND ANSWERS WITH VERIFIED
SOLUTIONS 100% CORRECT | RATED
A+ | 2025 NEW UPDATE
What is TFR and how does it influence the predictions on future human population?
ANSWER ✔✔ Total Fertility Rate: Average number of live births a woman has during her
lifetime. Shows population growth.
What are the 4 main human caused factors to the loss of biodiversity?
ANSWER ✔✔ Habitat Destruction, Invasive Species, Pollution, Overexploitation
What is Biomagnification?
ANSWER ✔✔ Tendency of certain chemicals to accumulate or build up within food chains
What is the other name for the global water cycle?
ANSWER ✔✔ Hydrological cycle
Where does most of the water that reaches the atmosphere come from?
ANSWER ✔✔ Evaporation and transpiration
How have humans influenced the water cycle?
ANSWER ✔✔ Hydroelectric dams, tapping aquifers, deforestation, estuaries, losing
evapotranspiration
What are the 3 main biogeochemical cycles we discussed?
ANSWER ✔✔ Carbon, Phosphorus, and Nitrogen
, What is the definition of a community?
ANSWER ✔✔ Assemblage of many populations that live in the same place at the same time
What is Species richness?
ANSWER ✔✔ Number of different species in each community
What is Species Diversity?
ANSWER ✔✔ The variety of species that make up the community
What is the difference between Species Diversity and Richness?
ANSWER ✔✔ Species diversity includes abundance and evenness, unlike richness which counts
only number of species
What is the role of metagenomics in helping estimate species diversity? What types of
organisms does it really help this task for?
ANSWER ✔✔ Helps find diversity of microorganisms by collecting microbial genomes and
using cultures
Explain the intermediate-disturbance hypothesis.
ANSWER ✔✔ Communities with intermediate levels of disturbance maintain the highest
number of species
What are disturbances? Give some examples.
ANSWER ✔✔ Events like droughts, fires, hurricanes, and species interactions such as
herbivory, predation, or parasitism
What is the name of the process that occurs after disturbances where the system tries to
reset itself?
ANSWER ✔✔ Ecological Succession (Primary and Secondary)
