If you saw words such as, "unlike, "as well as", "on the other hand", and "in contrast", what would you think the author's purpose was?

Jupiter is one of the nine planets in our solar system. It is called the giant among the planets because it has a diameter ten times as big as the earth. It also has twelve moons! Many scientists believe that the matter of which Jupiter is composed is in the form of a gas; it is not solid like the rock that makes up the earth and the moon. The truth in this hypothesis must await further exploration. Scientists do know that Jupiter’s rotation period is about ten hours, and its revolution period is about twelve years. This means that Jupiter spins very rapidly on its axis as it makes its orbit around the sun. The atmosphere surrounding this planet is probably made up mainly of ammonia and methane, and its temperature is far, far below zero. Since it has no water, no oxygen, and extremely low temperatures, it is unlikely that it could support life. This giant among planets does not seem like a friendly place for humans.

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February 19, 2007 — It's too early for spring migration, but monarch butterflies are on the move! They are spreading down the rivers in search of water. These early signs mean the winter season is coming to a close. Monarch butterflies have been in Mexico since November. Can they survive all winter with little or no food? Let's find out.

March 1, 2007 — It's March. The days are getting longer and temperatures are rising in Mexico. Within the month these butterflies will leave their winter home and begin the trip to North America. Get ready to track the spring migration.

March 10, 2007 — Here come the monarchs! Spring migration begins every March in a flurry. The monarchs are in a race against time. They can't stay in Mexico any longer. They can't move north too quickly either. The timing of their spring migration must be precise. How do they know when to leave, and why do they leave now?

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In most parts of the world, there are not as many crocodiles as there used to be. This is a problem because crocodiles are becoming endangered and also crocodiles are necessary to the balance of nature. Many crocodiles have died because people have dried up the swamps and marshes where the crocodiles live. Poachers (people who hunt illegally) have also contributed to the dilemma as crocodiles have been desired for their strong, smooth, leathery skins. In order to preserve these mighty creatures, people must take care of the crocodiles’ environment and help put a stop to the needless shooting of these animals.

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The sun bear, native to Southeast Asia, is an endangered species for two reasons. First, people in this part of the world hunt the sun bear for body parts such as the gall bladder, the claws and the meat. The body parts are valuable because some people believe that eating them will help heal broken bones and bruises. They believe this because the sun bear appears to fall out of trees without injuring itself. Additionally, special restaurants serve bear paws and bear meat to diners who think that eating this kind of meal will bring good health. In addition to being hunted, the sun bear’s habitat is being destroyed. The jungles where the sun bears live are being cleared to make way for homes and farms. Legendary beliefs can be harmful to nature.

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How can you tell the difference between a regular honeybee hive and a "killer" bee hive? Scientists have a joke about killer bees: Kick the hive and see how far you run! "Regular bees might buzz you for 100 feet or so," explains insect expert Margaret McMichael. "But 'killer' bees might chase you for two miles!" In many ways, killer bees and honey bees are similar. A killer-bee sting is no more deadly than a regular bee sting. Like killer bees, all honeybees have venom (poison) in their stingers. In many ways, killer bees also behave like regular honeybees. For example, all bees attack when they think their hive is in danger. But some differences in behavior make killer bees more deadly than honey bees. Compared to ordinary honeybees, killer bees have quick triggers. Unlike a honey bee, it takes very little to get killer bees riled up. "They can sense you walking from about two car-lengths away," says Margaret. Killer beehives can hold more than 50,000 bees, that is many more than in a honey bee hive. When a killer bee hive is disturbed, there are many more bees to react. When killer bees get angry, they will chase you for much longer than honey bees will if they are angry. "Smoke makes them think their house is on fire," says Margaret. "To get energy to fly away, they swallow a bellyful of honey. It's hard to sting with a full belly!"

WHAT IS THE TEXT STRUCTURE?

This text appears below an image and explains what the image shows.

These appear to the left of each item in a list.

The words and boxes off to the side of, or above and below, the main text of the page that contain additional information are known as __________.

Tells readers the topic that is discussed in a group of words, sentences, or paragraphs.

These include bold lettering like this, italic lettering like this, and underlining.

Diagrams, graphs, maps, and tables are all ___________. These help summarize, explain, or show information.

when, and in what order, things happen

why things happen and what happens next

what does not work and how to fix it

how things are similar or different

The parts of an article that are not the main body of the text.

The way authors organize what they write. These are formats for presenting information.

Choose the clue words that indicate the compare and contrast text structure: