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Why is it important that numbers of animals and plants in an ecosystem remain stable make up an example to show your point?
It is important that the population size of animals and plants to remain stable so the food chain runs fluidly. If you had a major increase or decrease of a species then that would cause drastic change to the environment. For example: given the food chain of grass, a grasshopper, a frog, a snake and a hawk if the grass population went under then the grasshopper, frog, snake and hawks population would drop because the grasshopper would eat the grass and without grass than the population would decrease along with the other. But if the frog population decreased then the grasshopper population would increase from the lack of frogs but the grass would decrease from the overpopulating grasshoppers while the snakes would decrease with the hawks. After a while though, despite the drastic over- or underpopulation, the environment would find a way to get itself stable once more.
When does competition decrease the size of population?
Survival of the fittest ! The strongest specimens will get the 'lions share' of food and mates. The weaker ones will starve and be denied the chance to breed.
What happens in a food chain and food web if the population size of an organism changes?
Food chains, along with food webs and food networks, describe the feeding relationships between species in a biotic community. In other words, they show the transfer of material and energy from one species to another within an ecosystem. A food chain describes a single pathway that energy and nutrients follow in an ecosystem, while a food web describes a complex network of interactions.
Explain how population sizes in nature are regulated?
The two primary factors that determine a population's size are the availability of food, and the prevalence of predators.In the abscence of predators, a population will grow until the food it consumes becomes equal to the food that is provided by the ambient ecosystem, available to the relevant population through the food chain. After that, the population cannot grow more unless the ecosytem suddenly is capable of providing more food.Predators regulate populations as a result of the connection between predators and prey in ecosystems. If there is an increase in the size of the prey population, more food will be available to the predators, so their population will also grow. The increased predator population will put downward pressure on the prey population as the predators feed upon them. If the prey population suffers substantial decreases, the predator population will also suffer knock-on decreases as there will be less food available to them.
What are limiting factors?
A resource whose availability limits the size of a population is a limiting factor. Food is a limiting factor when there is not enough food available to feed the entire population. Any resource can be a limiting factor for population size.
What are two factors that increase population size and two factors that decrease population size?
Increase: Survival and Immigration Decrease: Death and Emigration
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
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.
What effect would a drop in the size of the of the krill population have on the Antarctic food web and why?
Euphasia superba, Antarctic krill, are the base of the food chain in the Southern Ocean that surrounds Antarctica.Any decline in their population would mean that the remainder of the food chain would be forced into warmer water to find food.
How can competition decrease the size of a population size?
Only the best fit animals survive against all other species for food, mates, and other living condtions.
What is a natural disaster that can have a significant impact on human population?
it will decrease population size
What is the population of milk is in the bowl?
Population decrease in bowl by every 3 second millimeter. Size bowl important to population loss. Population decrease in bowl by every 3 second millimeter. Size bowl important to population loss.
What i's the usual response in the population size of many species to a density independent limiting factor?
tits
What are 2 ways that the size of a population can decrease?
By Genocide, and by war..
Why is it important that numbers of animals and plants in an ecosystem remain stable make up an example to show your point?
It is important that the population size of animals and plants to remain stable so the food chain runs fluidly. If you had a major increase or decrease of a species then that would cause drastic change to the environment. For example: given the food chain of grass, a grasshopper, a frog, a snake and a hawk if the grass population went under then the grasshopper, frog, snake and hawks population would drop because the grasshopper would eat the grass and without grass than the population would decrease along with the other. But if the frog population decreased then the grasshopper population would increase from the lack of frogs but the grass would decrease from the overpopulating grasshoppers while the snakes would decrease with the hawks. After a while though, despite the drastic over- or underpopulation, the environment would find a way to get itself stable once more.
What is RNA gene drift?
gene drift is when a population experiences a decrease in variation and population size.
