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What is logistic growth?
Population growth in which the growth rate decreases with increasing number of individuals until it becomes zero when the population reaches a maximum.
How is a populations growth in rate determined for growth rate to be zero what must occur?
The number of births must be the same as the number of deaths in a population for a growth rate to be zero.
What is it called when the death rate and birth rate are the same?
Zero growth
When would expect to see a species go through a logistic growth pattern?
A species is expected to go through a logistic growth pattern when resources are limited. Initially, the population grows rapidly (exponential growth), but as resources become scarce, the growth rate slows down and eventually stabilizes at the carrying capacity of the environment.
On a graph of population growth the size of the population when the growth rate decreases to zero represents an area's?
On a graph of population growth the size of the population when the growth rate decreases to zero represents an area's carrying capacity.
When is it possible for a population growth rate to be less than zero?
Zero population growthThe so-called replacement rate is about 2.2 births per fertile woman. That's what a society needs to maintain zero population growth. That "extra" 0.2 people is what's needed to account for premature deaths -- deaths that occur before procreation. Zero population occurs when the numbers of birth rate and death rate are the same/equal.
What is zero birth rate?
Zero birth rate occurs when babies are born as fast as other people in the same country are dying. Births = deaths = zero birth rate.
What are the differences between negative growth rate and zero growth rate?
Negative means people are leaving. Zero means that people are coming and going in equal amounts.
When the population growth rate becomes zero what is the population size equal to?
If the population growth rate becomes zero the population size becomes static. It stays where it was when it became zero until the rate changes. If the rate becomes negative the population would begin to shrink.
Do adults have a linear growth rate?
Clearly not. Most growth occurs from ages 0-18. How often do you see a 35 year old getting taller each year? The growth rate is probably modeled well by an exponential decay (high when you are a baby, almost zero when you are 75).
What is ZPG?
ZPG stands for zero population growth, referring to a state in which a population neither grows nor declines. It occurs when the birth rate equals the death rate, resulting in a stable population size. This concept is often discussed in the context of sustainable development and long-term demographic trends.
Why does a populations not level off during the same year it reaches zero population growth?
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