Is a killer whale a whale? Yes and no. Yes, because dolphins are technically whales. No, because a killer whale is a dolphin. They are called orcas, although they are more commonly known as killer whales. A killer whale is called a whale because of its size, but it is actually a dolphin. The orca […]
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What is the difference between bees and wasps? There are many differences. Some of them are what they eat, where they live, how they sting, and how hairy they are. There are many more differences. This is not an easy question because there isn’t just one type of bee and one type of wasp. There
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Why do we have ears on the sides of our head? Because of the position of our brains and our spines, because it puts the most possible distance between each ear, because we rely on sight more than sound, and because we are not prey animals and we don’t hunt by stealth. Our ears are
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Why can mantis shrimp see so many colors? It turns out that they can’t see more colors than we can. They just process the way they see colors differently. Manis shrimp have twelve to sixteen different types of photoreceptors in their eyes, which lead people to believe that they could see many colors, or shades
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Why do birds need to see ultraviolet light? It helps them with foraging, navigation, and signaling to each other. We can only see combinations of three colors: red, green, and blue. We have cones that detect these colors in our eyes. Most birds can also see ultraviolet light. They have four types of cones in
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Why did prehistoric insects grow so big? Because there was a lot more oxygen in the atmosphere and there were no birds. The largest insect in the world today is the Phryganistria chinensis, which is a stick insect. It is 64 cm long. The insect with the largest wingspan is the White witch moth, which
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What do worms do? They break down organic matter in the soil and release the nutrients in their waste. Earthworms may all look the same to us, but there are 7,000 different species of them across the world. 150 of those species are the ones we commonly see. There are far more worms in the
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Do cows only eat grass? Wild cows and cows that graze on pasture eat a lot of grass, but they also eat other plants as well. Cows that are kept in dairy farms are often fed a lot of grain and soy. There are not many wild cows in the world. In most developed countries,
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Why do beavers build dams? To make a deep pond that they can live in. Beavers are rodents and they are the second largest rodents in the world. Only the capybara is bigger. However, unlike most other rodents, beavers are herbivores. They mainly eat tree bark, water plants, and grasses. Because they are mammals and
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What is a black swan event? It is a completely surprising and unpredictable event that has major consequences. It is something that is as rare as a black swan. The phrase was first used in Rome in the 2nd century BC and its usage was to show that an event was as rare on Earth
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