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What is the difference among a threatened species an endangered species and an extinct species?
Extinct means there are none of that species in the wild, threatened means the number of that species is declining, and endangered means there are only a few thousand of that species in the wild.
What is the response in the population size of many species to a density independent limiting factor?
an overall decrease in population regardless of the location of the "clan"
How do ecologists determine if a population is changing?
A population is a group of individual of a single species that simulataneously occupy the same general area. Population may increase or decrease.
What is the usual response the population size of many species to a density independent limiting factor?
A population size decrease is the usual response in the population size of many species to a density-independent limiting factor. Not enough food is an example of a limiting factor.
Does the population size increase or decrease at higher trophic levels in the pyramid of numbers of an ecosystem consisting of a tree insects (that are herbivores) and birds feeding on the insects?
Population sizes decrease at higher trophic levels. If they increased the insects population would decrease meaning there would be less food available for the birds so their population size would then decrease. Look at the relationships between predator and prey species for more information
Does the population size increase or decrease at higher trophic levels in the pyramid of numbers of an ecosystem consisting of any herbivores and birds feeding on the insects?
Population sizes decrease at higher trophic levels. If they increased the insects population would decrease meaning there would be less food available for the birds so their population size would then decrease. Look at the relationships between predator and prey species for more information
How might using mass selection and inbreeding hurt a species' chances for survival?
Because it will decrease the genetic diversity of the population.
What might happen if the population of hawks in ecosystem grows very large?
there would be less nutrients for the plant.
What will most likely be the result of this interspecific competition?
The species that is better adapted to the environment and able to acquire resources more effectively will likely outcompete the other species. This can lead to a decrease in population or even local extinction of the less competitive species.
What mechanisms of evolution decreases the genetic diversity as a species?
Genetic drift, founder effect, and population bottlenecks are mechanisms that can decrease genetic diversity in a species. These mechanisms result in a reduction of variation within a population due to random events that affect the genetic makeup of the population.
What might happen in an ecosystem if the population of one species grows unusually fast?
If the population of one species grows unusually fast, it can lead to competition for resources such as food and habitat. This can result in depletion of resources for other species, disrupting the balance of the ecosystem. It can also lead to overpopulation, which may cause ecological imbalances and impact the overall biodiversity of the ecosystem.
What i's the usual response in the population size of many species to a density independent limiting factor?
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