How is wombat poo cube shaped? They have a very elastic intestinal tract, which shapes their poo into 2 cm cubes. Wombats are four-legged marsupials that are native to Australia. They are low to the ground and weigh about 35 kg, giving them a low center of gravity. A lot of different types of wombats […]
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Why do crabs use sea anemones as weapons? The crab, known as the pom-pom crab, uses sea anemones to defend against predators and to sting its prey. There are three types of symbiotic relationships in the world. The first is mutualism. In a mutualistic relationship, both parties receive a benefit that they would not be
#1453 Why do crabs use sea anemones as weapons? Read More »
What is Peto’s Paradox? Peto’s Paradox is an observation that the occurrence of cancer in an organism doesn’t increase in line with the number of cells that organism has. Because cancer is caused by mutations in cells, it would be logical that the more cells an organism has, the more occurrences of cancer it will
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Why don’t giraffes faint? Giraffes don’t faint because they have a very strong heart and a very high blood pressure. If we bend over and then stand up again, we get a head rush. Sometimes it can be so bad that you faint. This is called orthostatic hypotension. Your blood pressure is set at the
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How do birds balance on a phone line? Birds can balance on a phone line because of the way their feet and legs work, their size, their vestibular system, and their balance organs. Birds can perch on pretty much anything without any trouble. In fact, they can also sleep perched on things like power lines
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Were dinosaurs warm-blooded or cold-blooded? The majority of dinosaurs were most likely warm-blooded. “Dinosaur” comes form the Greek “deinos”, which means terrible, and “sauros”, which means lizards. They are terrible lizards, which would lead many people to think that they were cold-blooded, as most lizards are today. Lizards have evolved to be cold-blooded because it
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What is the problem with invasive species? The problem with invasive species is that the ecosystem they are invading has not evolved to deal with them, and they can cause widespread damage. Plants and animals have always managed to spread outside of their own ecosystem, but they are always controlled by the conditions or by
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What is the loudest animal? The loudest animal in the world is the sperm whale. An adult sperm whale can produce clicks that are 230 decibels. Sound is measured in decibels, which is a logarithmic system. A logarithmic system means that the next level is ten times higher than the previous level. So 20 dB
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How do some animals freeze and not die? There are a few animals that can freeze solid in the winter and then thaw out again in the spring without any damage to their bodies. They do this by producing a type of antifreeze. We could easily freeze solid in the winter, but that would be
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Why do bees buzz? Bees buzz because of the speed with which they beat their wings. All insects with wings make a sound, but some of them are too high pitched for us to be able to hear it. Sound is made by something vibrating and passing that vibration on to the molecules near to
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