Passage one. The living things in an ecosystem affect each other in many ways the consumers that kill other animals for food are called predators, the word predator usually brings to mind pictures of lions and wolves, but such creatures as owls frogs and humans are also predators. Some predators carnivores such as lions depend entirely on the animals they killed while many others such as foxes and humans eat plants, too. Some people think of predators as bad though humans themselves are the greatest predators, the world has known. Sometimes individual predators attack farm animals so they have to be controlled. People usually believe that predators have an easy time killing defenceless prey, but studies of predators and their prey show that it isn't true, after observing tigers in Africa, Dr George Miller wrote their acute senses, great speed, strength and size and formidable claws. And teeth have given many naturalists the impression that they can kill whenever they want, my experience shows quite the contrary the tiger has to work quite hard for its meals. Question eleven. What is a predator according to the passage. Which of the following is not mentioned as a predator. What has doctor Miller found in his study.