There is a limit to available resources and all organisms in an ecosystem compete for those resources. Those that are better adapted, will obtain higher amounts of those resources leaving less for those that do not have the best abilities. These organisms that did not obtain all the resources they needed will die therefore controlling population growth and the size of the population.
They kill and harm eachother, thus decreasing population. Hope that helps :)
Competition for resources like food and shelter among individuals in a population can affect the population size. Strong competition may limit the availability of resources, leading to a decrease in population size.
Interactions between organisms can impact population size through competition for resources, predation, disease transmission, and mutualistic relationships. For example, competition can reduce available resources, leading to a decrease in population size. Predation can also directly affect population size by reducing the number of individuals in a population. On the other hand, mutualistic relationships can benefit population growth by providing advantages such as enhanced resource availability or protection from predators.
The biggest limit for any organism's population is food supply. If raccoons cannot find enough food, they will not reproduce. Another limit is predation. Many animals eat raccoons. Bears, wolves, dogs, and cats are among the animals that thin the raccoon population. Disease is another cause of population decrease.
Competition occurs among the organisms, leading to a struggle for resources. This competition can result in a decrease in resource availability, which can ultimately limit the population size of the organisms involved. Over time, this can lead to adaptations in the competing species to reduce competition and carve out their own ecological niche.
Food supply
This is why you don't use Answers.com! COMPETITION **** :)
the thing people limit the size is land, water, food, and climate.
Predation can decrease a population by directly killing individuals. Competition for resources can limit population growth by reducing access to food, mates, or other necessities. Crowding and stress can also limit population growth by increasing competition, reducing reproductive success, and weakening immune systems, making individuals more vulnerable to disease.
Platonic
competition
A biotic factor that could limit the size of a deer herd is the availability of food sources. If there is not enough food to support a larger herd, this could lead to competition for resources, malnutrition, and a decrease in reproductive success among the deer population.