• A population will grow as long as it has what it needs.
  • Once it is too large, some of its members will die off.
  • This keeps the population size at the right number.
  • For a given species, there is a maximum population that can be supported by the environment.
  • This maximum is called the carrying capacity.
  • When a population gets close to the carryingcapacity, it usually grows more slowly.
  • When the population reaches thecarrying capacity, it stops growing.
  • A population growing at this rate would double in size in just 35 years.
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