Bio 400 Exam 4 Questions and
Answers 100% PASS
Ecology - CORRECT ANSWER-Scientific study of interactions between
organisms and their environment
Biotic - CORRECT ANSWER-Living things
Abiotic - CORRECT ANSWER-Non-living factors
Climate - CORRECT ANSWER-Average weather for a location
Precipitation - CORRECT ANSWER-rain, snow, sleet, or hail that falls to the
ground.
Biome - CORRECT ANSWER-Ecosystem types or habitats
Evapotranspiration - CORRECT ANSWER-Evaporation of h2o from soil
through plants
Global warming - CORRECT ANSWER-Rise in the average temperature
worldwide
Pre-Industrial [CO2] (<1800s) - CORRECT ANSWER-280 ppm
, [CO2] anytime in last 3-5 million years - CORRECT ANSWER-415 ppm
Global climate change - CORRECT ANSWER-Shift from weather patterns of
past 10,000 years
Permafrost - CORRECT ANSWER-Frozen soil under tundra & northern forests
Tipping Points - CORRECT ANSWER-Point at which further change no longer
needs a driving force, positive feedback loops take over
Mass Extinction - CORRECT ANSWER-Sudden drop in the # of species on
earth
Overshoot - CORRECT ANSWER-Exponential growth exceeds K, then crashes
Logistic growth - CORRECT ANSWER-R declines as K is reached
Carrying Capacity (K) - CORRECT ANSWER-Maximum sustainable population
size in a given environment
Exponential growth - CORRECT ANSWER-R is constant
Growth rate (r) - CORRECT ANSWER-% change in size over time
Emigration - CORRECT ANSWER-E, exiting
Immigration - CORRECT ANSWER-I, entering
3 basic survival patterns - CORRECT ANSWER-High survival rate when young
Constant survival rate
Low survival rate when young
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
Answers 100% PASS
Ecology - CORRECT ANSWER-Scientific study of interactions between
organisms and their environment
Biotic - CORRECT ANSWER-Living things
Abiotic - CORRECT ANSWER-Non-living factors
Climate - CORRECT ANSWER-Average weather for a location
Precipitation - CORRECT ANSWER-rain, snow, sleet, or hail that falls to the
ground.
Biome - CORRECT ANSWER-Ecosystem types or habitats
Evapotranspiration - CORRECT ANSWER-Evaporation of h2o from soil
through plants
Global warming - CORRECT ANSWER-Rise in the average temperature
worldwide
Pre-Industrial [CO2] (<1800s) - CORRECT ANSWER-280 ppm
, [CO2] anytime in last 3-5 million years - CORRECT ANSWER-415 ppm
Global climate change - CORRECT ANSWER-Shift from weather patterns of
past 10,000 years
Permafrost - CORRECT ANSWER-Frozen soil under tundra & northern forests
Tipping Points - CORRECT ANSWER-Point at which further change no longer
needs a driving force, positive feedback loops take over
Mass Extinction - CORRECT ANSWER-Sudden drop in the # of species on
earth
Overshoot - CORRECT ANSWER-Exponential growth exceeds K, then crashes
Logistic growth - CORRECT ANSWER-R declines as K is reached
Carrying Capacity (K) - CORRECT ANSWER-Maximum sustainable population
size in a given environment
Exponential growth - CORRECT ANSWER-R is constant
Growth rate (r) - CORRECT ANSWER-% change in size over time
Emigration - CORRECT ANSWER-E, exiting
Immigration - CORRECT ANSWER-I, entering
3 basic survival patterns - CORRECT ANSWER-High survival rate when young
Constant survival rate
Low survival rate when young
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law
