Density-dependent limiting factors are those that become more intense as the population density increases. They typically include:
Competition for resources like food and water.
Predation, where the predator-prey relationship can be affected by the density of the population.
Disease, which can spread more easily in conditions where individuals are living in close proximity.
Parasitism, where parasites can have a more significant impact on a host population when it is denser.
A factor that is NOT density-dependent would be something like a natural disaster (e.g., a wildfire or hurricane), which can affect a population regardless of its density. These are known as density-independent factors and they typically relate to physical or abiotic factors such as weather events, natural disasters, or human activities like pollution or habitat destruction