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Population Size - Coggle Diagram
Population Size
Birth Rate
increase
family expectations
plentiful resources(money, food, etc.)
lack of BC availability
decrease
contraceptive use
laws prohibiting more than one child
High cost
Death rate
increase
natural disasters
pandemics
limited access to healthcare
limited amount of resources
third world poverty
decrease
access to medicine
vaccination
Strong food sources
sewage systems
Migration
immigration
increase in population
emigration
decrease in population
Adaptation
longer life span
higher situational tolerance