BIO 220 TOPIC FULL SOLUTION SCRIPT
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
⩥ Carrying Capacity. Answer: number of organisms in a given species
that can be supported indefinitely
⩥ Malthus. Answer: Wrote "An Essay on the Principle of Population"
1798
-predicts population (exponential growth) will outgrow food supply
(steady growth)--environmental degradation
⩥ Demography. Answer: -The scientific study of population ecology to
the study of humans
-Vital statistics: population size, structure, sex, age, BR, DR, migration
⩥ Crude Birth Rate. Answer: number of births per year for every 1,000
people
⩥ Crude Death Rate. Answer: number of deaths per year for every 1,000
people
,⩥ Marx. Answer: Argues population growth results from poverty and
resource depletion
⩥ Zero Population Growth. Answer: occurs when birth rate and death
rate are equal/stable
⩥ Total Fertility Rate (TFR). Answer: estimated average number of
children a woman produces in her child bearing years
⩥ Replacement Fertility Rate. Answer: number of offspring a couple
produces to replace themselves
⩥ Natural Growth Rate. Answer: the difference between the crude
birthrate and crude death rate (BR - DR)
⩥ Factors that affect life expectancy.. Answer: -age
-healthcare/technology
-nutritious food
-better sanitation
-awareness/availability of resources (health care)
⩥ Dependency Ratio. Answer: -number of non-working compared to
working individuals in a population
-US concern: not enough incoming working class to replace retired
, ⩥ Poverty & Population Growth factors. Answer: -higher poverty levels
equate to higher population growth
-economic development allows for population control (education in
family planning & access to resources)
⩥ Empowering women. Answer: -education plays vital role in giving
women the power to make decisions regarding their lives and
reproductive behavior.
-women make up 70% of poor and 64% of illiterate individuals in world
population
⩥ Demographic Transition. Answer: -model of economic and cultural
change to explain decline BR & DR in industrializing nations
-need for large families lessens with mortality
-focus is on quality of life
⩥ Less developed countries (LDC). Answer: -80% of world population
-account for 90% of projected growth (high birthrate)
-young, poor and rapidly growing
-Africa, Asia, Latin America
⩥ Most developed countries (MDC). Answer: -populations expected to
stabilize or decline
2026 QUESTIONS WITH SOLUTIONS
GRADED A+
⩥ Carrying Capacity. Answer: number of organisms in a given species
that can be supported indefinitely
⩥ Malthus. Answer: Wrote "An Essay on the Principle of Population"
1798
-predicts population (exponential growth) will outgrow food supply
(steady growth)--environmental degradation
⩥ Demography. Answer: -The scientific study of population ecology to
the study of humans
-Vital statistics: population size, structure, sex, age, BR, DR, migration
⩥ Crude Birth Rate. Answer: number of births per year for every 1,000
people
⩥ Crude Death Rate. Answer: number of deaths per year for every 1,000
people
,⩥ Marx. Answer: Argues population growth results from poverty and
resource depletion
⩥ Zero Population Growth. Answer: occurs when birth rate and death
rate are equal/stable
⩥ Total Fertility Rate (TFR). Answer: estimated average number of
children a woman produces in her child bearing years
⩥ Replacement Fertility Rate. Answer: number of offspring a couple
produces to replace themselves
⩥ Natural Growth Rate. Answer: the difference between the crude
birthrate and crude death rate (BR - DR)
⩥ Factors that affect life expectancy.. Answer: -age
-healthcare/technology
-nutritious food
-better sanitation
-awareness/availability of resources (health care)
⩥ Dependency Ratio. Answer: -number of non-working compared to
working individuals in a population
-US concern: not enough incoming working class to replace retired
, ⩥ Poverty & Population Growth factors. Answer: -higher poverty levels
equate to higher population growth
-economic development allows for population control (education in
family planning & access to resources)
⩥ Empowering women. Answer: -education plays vital role in giving
women the power to make decisions regarding their lives and
reproductive behavior.
-women make up 70% of poor and 64% of illiterate individuals in world
population
⩥ Demographic Transition. Answer: -model of economic and cultural
change to explain decline BR & DR in industrializing nations
-need for large families lessens with mortality
-focus is on quality of life
⩥ Less developed countries (LDC). Answer: -80% of world population
-account for 90% of projected growth (high birthrate)
-young, poor and rapidly growing
-Africa, Asia, Latin America
⩥ Most developed countries (MDC). Answer: -populations expected to
stabilize or decline
