Nobody knows. Probably, like the dire wolf, there were more small animals than big ones and they starved to death because, they were built to hunt down large prey. Another theory suggests the huge teeth made them front heavy and clumsy. Maybe it was humans who killed them.
No one knows for sure how the dinosaurs went extinct. However, some of the theories are a dramatic climate change, or a large meteorite impact.
Stop using Mobile (cell) phone...Radiation from mobile towers may have varying negative impact on all "critters" being
Absolutely none. They are extinct.
Sparrows are not becoming extinct globally, but some species are facing declining populations due to habitat loss, pollution, and changes in agricultural practices. Urbanization and use of pesticides can also impact sparrows' food sources and nesting sites. Conservation efforts are important to help protect sparrows and their habitats.
Strong geological evidence suggests that dinosaurs were killed off by an asteroid impact 65 million years ago. The impact drastically altered their environment, and they were not able to cope, so they became extinct. However this isn't the only reason. Many groups of dinosaurs were already becoming extinct from other environmental changes, but this is considered the final event that finished them off.
A meteorite impact
Ozone depletion has adverse impact. It can cause human life to extinct.
they went extinct
Wolves were overhunted, but they are not extinct.
Dinosaurs became extinct 65 million years ago, at the end of the Cretaceous period.
Pterosaurs declined during the Late Cretaceous due to competition with early birds. The last pterosaurs became extinct in the End Cretaceous Mass Extinction, which was caused by an asteroid impact in the Gulf of Mexico.
Try dinosaurs and see what happens to man.