Table of Contents
- 1 What are 4 factors that reduce a population?
- 2 Which factor would reduce the likelihood of exponential growth occurring in a given population?
- 3 What factors affect population dynamics?
- 4 Is the population growth rate positive or negative?
- 5 What happens when the population of an ecosystem is too big?
What are 4 factors that reduce a population?
In this activity you discovered that birthrate, death rate, immigration, and emigration affect the growth rate of a natural, open population.
Which factor would reduce the likelihood of exponential growth occurring in a given population?
Chapter 5 Study Guide Biology Crisp
Question | Answer |
---|---|
what factor might NOT contribute to an exponential growth rate in a given population | reduced resources |
in a logistic growth curve, exponential growth is the phase in which the population | grows quickly |
What factors affect population dynamics?
After all, population change is determined ultimately by only four factors: birth, death, immigration, and emigration.
What are the limiting factors for population growth?
For a population to grow there must be ample resources and no major problems. A population can shrink either because of biotic or abiotic limiting factors. An increase in predators, the emergence of a new disease, or the loss of habitat are just three possible problems that will decrease a population.
How can limiting factors prevent the exponential growth of…?
Scientists have estimated limiting factors will eventually cause the human population plateau at around a population of 9 billion. Food can only support so many humans so it will not allow the population to grow exponentially forever. Some of these limiting factors will be density dependent and some will not.
Is the population growth rate positive or negative?
The population growth rate can result in either a positive or negative rate depending on the factors. Let’s review populations, which are a group of individuals of the same species that inhabit the same area, and the factors that influence changes in populations.
What happens when the population of an ecosystem is too big?
Once the population is too large, some of its members will die off due to competition for space, food or water, or in some cases, some may migrate to a new location. This keeps the population size at the right number. Biotic and abiotic factors determine the population size of a species in an ecosystem.