Which text is the main idea of this paragraph? Although many people are afraid of spiders, spiders actually help humans in many ways. For one thing, they eat a lot of smaller insects. In fact, they eat more insects than birds do, including ones that are too small for birds to find. Some of these insects carry diseases that are harmful to humans. By eating the insects, spiders prevent the diseases from spreading to humans. Some spider venom has also been known to help humans by preventing brain damage in people who have a stroke.​