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 […]
#1428 What is the problem with invasive species? Read More »
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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How does our balance work? We balance by using our visual system, our proprioceptive system, and our vestibular system. The visual system is obviously our eyes, the proprioceptive system is in our muscles and joints, and the vestibular system is in our inner ears. Some people have much better balance than others, but we all
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Why do some plants have thorns? Plants generally have thorns to deter herbivores and insects from eating them. Plants usually have parts that they want to be eaten (the fruit, for example) and parts that they don’t want to be eaten (the stem and leaves). Plants have different methods of scattering their seeds. Some do
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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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What causes gout? Gout is caused by a buildup of uric acid crystals in joints, which leads to a form of inflammatory arthritis. You have probably heard of gout. King Henry VIII was, amongst other things, famous for suffering from gout. It was often an illness associated with rich and powerful people because the majority
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How does deodorant work? There are three ways that deodorants work. They can cover the smell of sweat with a scent, they can kill the bacteria that make the smell, or they can reduce the amount that a person sweats. When the summer comes around, we all sweat. Some people sweat more than others, and
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How do compound eyes work? Compound eyes work by having a large number of microscopic eyes that each have a lens and see an image, which then gets combined in the brain. Most of the insects that have eyes have compound eyes. The only insects that don’t have compound eyes don’t really have eyes at
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Why do dogs pant? Dogs pant to lose heat because they don’t have as many sweat glands as we do. Many animals have different ways of losing heat. We have evolved to be able to lose a lot of heat through our skin. We have roughly 2 to 4 million sweat glands all over our
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