Download The Violent Earth: Earthquakes, Volcanoes and Tsunamis by Dr. Subodh Mahanti PDF

By Dr. Subodh Mahanti

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They are called compound eyes because each eye is made of between two and 23,000 lenses. These photoreceptors send the information to the brain, where all the images get put together to create a picture. But most insects are nearsighted—their eyes only focus on things that are close by. With all those lenses, why does an insect’s brain create a fuzzy picture? There What a fly sees. are around five million photoreceptors in just the middle part of a human’s eye. What they really need to see is motion.

If a roll of the abdomen die shows you have an unprotected abdomen, go back to start. • Here comes a fly swatter! If a roll of the head die doesn’t show big compound eyes, lose one turn. Although adult insects come in many shapes, sizes, and colors, at least they all have the same basic body plan. On the other hand, immature insects often look very different from each other, and even from their parents. Get ready to explore and understand metamorphosis, one of nature’s greatest magic shows. 31 3 Metamor phic Magic M ost animals are born with all the body parts they will ever have and in the habitat where they will spend their whole lives.

Did your results match the gauze covering the second bottle. Francesco’s? These insects change so much between the egg and adult stages that it is hard to believe they are really the same animals. Egg 36 It starts when a female lays an egg. When the insect hatches, it usually looks like a soft worm and is called a first instar larva. Larval Instars Butterfly and moth larvae = caterpillars Legless fly larvae = maggots Beetle and bee larvae = grubs Pupa Adult Almost immediately, the larva starts eating and growing.

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