Food availability is a determining factor.
Food availability is a determining factor.
Food availability is a determining factor.
Food availability is a determining factor.
A decrease in the availiable water
Some of the population could die, and some could move away from that area
There will be a 95% decrease in the population of Emperor Penguins by 2011
During the early 1990s, the population of Russia peaked at around 148 million. It then began a slow decline, decreasing to a current population of around 143 million. This decline is expected to continue, with Russia's population predicted to decrease to around 111 million by 2050 - a decline of over 20%.
What will cause a decline in the human population is loss of fish, dirty water, a whole in the ozone layer. These are just three causes that could decrease mankind.
One of the Arctic Foxes' main sources of food is the Lemming. When there are abundant lemmings the Fox has food to raise large litters and the population of Foxes increases. Similarly the numbers of Foxes that can be fed decreases when the lemming population declines because there is less food for the Foxes. Basically the population of any animal is controlled by its food supply.
A natural cause of decline in a population could be disease outbreak or an epidemic. Diseases can spread rapidly through a population, resulting in a significant decrease in the number of individuals. This decline in population can occur in both plants and animal species.
The decline of the native population in early American history was war with the settlers. The settlers forced them to move from their land and many of them died.
Some possible reasons are:bad weatherdiseasetoo many predatorsinvasive species