If humans were to suddenly disappear from Earth, the fate of various animal species, including elephants, lions, hyenas, cheetahs, zebras, and ostriches, would largely depend on their adaptability, natural habitats, and interactions with other species.
Elephants: Elephants are highly adaptable and can thrive in a variety of ecosystems, including savannas, forests, and grasslands. In the absence of human interference, elephants could continue to roam freely in many parts of Africa and potentially extend their range to some regions of Asia.
Lions: Lions are apex predators and are found in various habitats, including savannas, grasslands, and woodlands. In the absence of humans, they would likely continue to roam freely across much of Africa and parts of Asia, where suitable prey and habitats are available.
Hyenas: Hyenas are also highly adaptable and can live in diverse environments, including savannas, grasslands, forests, and deserts. Without human pressures, they would likely maintain their populations in many parts of Africa and potentially expand into areas where they previously faced conflict with humans.
Cheetahs: Cheetahs are well-suited to open grasslands and savannas, and they require large areas to roam and hunt. In the absence of human disturbance and habitat destruction, cheetah populations might recover and continue to thrive in their natural habitats.
Zebras: Zebras are grazers that predominantly inhabit grasslands and savannas. Without human interference, they would likely continue to roam freely in various parts of Africa.
Ostriches: Ostriches are flightless birds found in open grasslands, savannas, and deserts. They have a good chance of maintaining stable populations in the absence of human disturbances.
It's important to note that some of these species, particularly in Africa, might face other challenges such as competition with other wildlife, disease, and natural predators. Additionally, the absence of human intervention could also lead to changes in ecosystems, affecting food availability and predator-prey dynamics.
Beyond Africa, some of these species have been introduced or translocated to other parts of the world in zoos, wildlife reserves, and private collections. In the absence of humans, these introduced populations might face different challenges, depending on their location and adaptability to the local environment.
Overall, the scenario of humans disappearing from Earth would have complex and far-reaching effects on wildlife, and the fate of individual species would be influenced by various factors in different regions around the world.