the main cause is that they run out of resources.
A hole in the ozone is a big threat. It can cause humans and other organisms to extinct.
the cause of the insect population increasing is that the animals are becoming extinct.
If one of the main sources of food became extinct.
The lack of care by the human race, in indiscriminate fishing is the BIGGEST cause !
it is nothing. the vultures already extinct then why do you want to know the cause?
If an animal has become extinct the animals preys population would grow this would cause the preys prey to become endangered or extinct. The animals predator would not have as much to eat.
overpopulation
Possible causes for a decrease in organisms in a habitat include habitat destruction or degradation, changes in environmental conditions such as extreme weather events, pollution, competition with other species, or predation. These factors can lead to a loss of resources, decline in population size, or displacement of the organisms from their habitat.
Cause
Diseases do not cause unicellular organisms; unicellular organisms cause diseases.
by poluting
I doubt it cause mammoths are extinct.