2. Bats, birds, and some insects have wings. This is an example of . 3. There once were more than 500 species of cichlids in Africa's Lake Victoria, with many different colorations and feeding behaviors. This is an example of . 4. The North American mole and the Australian "mole" are not closely related but both have enlarged front paws and a pad of thick skin on their noses. This is an example of .