Answer
think of resources that are needed to sustain life
(see examples in "step by step"
Work Step by Step
Exponential growth model: $A=A_{0}e^{kt} \quad (k>0)$
(where $A_{0}$ is the initial quantity, and $A$ is the quantity after time t)
The growth is unlimited,
Theoretically A can become arbitrarily large.
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In reality, population (people living on EARTH, bacteria in petri dish.. etc )
are bounded by the limited availability of
(focusing on human populations)
- food
- unpolluted drinking water supply
- health care facilities,
- living quarters (hygiene)
- ... other resources that are needed to sustain life.
