* when population are high and Natural Resources are comparably rare. * when natural resources are depleted as in a famine or drought.
Charles Darwin Theory of natural selection
Competition is different species' struggles to obtain some common necessity, whether it be habitat, prey, etc, within a population. Because environments can only support a certain amount of organisms, these organisms must compete for the resources. This is good for populations because it helps to control reproduction. If an animal is reproducing too fast, for example, another animal may compete with it for food and eventually kill enough to control the overabundance.
you
Animal populations that compete with humans for habitat often face significant challenges, including habitat loss, displacement, and increased mortality. As human activities expand, such as urban development and agriculture, these populations may decline due to reduced access to resources like food and shelter. This competition can lead to a decrease in biodiversity and, in some cases, result in the endangerment or extinction of certain species. Ultimately, the survival of these animal populations depends on effective conservation efforts and sustainable land-use practices.
Rats compete with us because rats eat our grain crops.
Animal Atlas - 2004 Animal Populations 8-7 was released on: USA: 24 October 2011
A lot.
dogs, cats, and cows
Trees
Larry M. Hunt has written: 'Energy flow in animal populations' -- subject(s): Animal populations
Culling is used as a way to manage animal populations. If the populations in a confined area are left to their vices, they will have to fight and compete for lesser and lesser food and water resources. Letting nature take it's course doesn't work because the animals can't just move on and find greener pastures when things get crowded. They would literally drink and eat their populations to death.
what animal does a tarantula cmpete with