Central idea

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What is the central idea?
 There are many types of lethal venom in the animal kingdom, but perhaps no stranger carrier than the platypus. The platypus is one of few venomous mammals.  Males carry a venom cocktail in their ankle spurs that incapacitates victims with excruciating pain.  Stranger still, the platypus is the only mammal that uses electroreception.  What this means is that the platypus uses its bill to sense the electricity produced by the muscular movements of its prey.  The platypus neither sees, hears, nor smells its prey while hunting but, rather, pursues it through electroreception.  Perhaps most odd, the platypus is the only mammal that lays eggs rather than giving birth to live young.  The platypus is an odd creature indeed.  

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The platypus is an odd, poisonous creature.

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Which word correctly matches the following definition: The most important point the author makes.

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Central Idea

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Which detail best supports the idea that depression is a common illness that is easy to treat but often ignored?

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Many people try to hide their depression and avoid getting help.

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We often let others know what we are thinking without using words. The name that we give for this kind of communication is body language. Body language includes gestures, facial expressions, and posture. Body language does not always mean the same thing to everyone.
What is the CENTRAL IDEA of the above paragraph?

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We use body language to communicate with others.

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What is the CENTRAL IDEA in the following paragraph? Wolverines are medium sized mammals. They weigh no more than 50 lbs. Yet they have earned their reputation for ferocity by killing prey many times their size. But why do they get in so many fights? The reason why wolverines have so many conflicts with other animals (including wolves, cougars, and even bears) is probably because of the wolverine's preferred hunting style. Rather than chasing down or tricking its prey like most hunters, the wolverine prefers to take its meals directly from other hunters. So while a polar bear or a lone wolf might be enjoying a hard earned carcass, a hungry wolverine may try to take his lunch. As you might imagine, this style of hunting get the wolverine in plenty of fights.

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Wolverines have a aggressive hunting style.

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What is the CENTRAL IDEA of the paragraph above? It's no surprise that exercise increases energy. The physical challenge prepares your body in a variety of ways. Blood sugar is more quickly converted to fuel, more oxygen is supplied to your cells, and fight-or-flight hormones are released. Instead of leaving you exhausted, exercise energizes. Do it in the morning for an all-day high or later in the afternoon for a pick-me-up.

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Exercise increases your energy.

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Which sentence from the paragraph SUPPORTS the central idea that CATS HAVE A SMART WAY OF GETTING WHAT THEY WANT?

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"The purr part of the sound keeps humans from becoming too annoyed."

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What is the central idea of the passage?
Thomas Edison’s life span is known as “The age of Edison.” If it wasn’t for Thomas Edison, we might not have electric lights, telephones, movie cameras, or computers! Think of all the ways these great products affect our lives today. Edison held over 1,000 patents and received dozens of awards during his lifetime for his inventions and contributions to science.

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Thomas Edison was an important inventor

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What is the central idea of the passage? In training to be a knight, a person was expected to study hard and learn good manners. They were taught to play musical instruments, sing, and recite poetry. They also studied reading, writing, geometry, and strategy games. Another knight would then teach the person to shoot a bow and arrow, fight with a sword, and ride a horse. To say the least, knights had a well-rounded education.

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Knights learned a variety of subjects while training

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What is the central idea of the passage? In 1981, a new television channel was introduced to showcase musicians performing their songs in music videos. This channel was called MTV, or Music Television. Since the channel first went on the air, viewership has increased, and the channel has expanded to countries all over the world. Today, MTV not only shows music videos, but a variety of other television programming as well.

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MTV has been a ground-breaking TV channel