Why can you graft onto a plant? You can graft onto a plant because they don’t have an immune system. There are several ways of grafting plants, but the method I am thinking about is called cleft grafting. In cleft grafting, a cleft is cut into the trunk of a tree of the stalk of […]
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Why do teeth have nerves? We have nerves in our teeth to provide us with feedback on what we are eating and how much pressure we are applying. Teeth appear to have nerves for three reasons. The first reason is because the inside of the tooth is living tissue with a blood supply and where
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How good is an elephant’s sense of smell? Elephant’s have a better sense of smell than any other animal on Earth. We know that our sense of smell is pretty basic when we compare it to a lot of other animals, but that makes sense because we have evolved for more of our brain to
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How much weight could a human lift? This is a difficult question to answer because there are too many variables, but possibly three or four tons. There are many ways of lifting weight and there are different records for each method. The heaviest weight ever lifted by a human is purported to be 2,844 kg,
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What is a syrinx? It is the organ that birds use to produce sounds and their birdsong. Birds make sound in a different way to us. We use our larynx and they use their syrinx. Both of these words have come from Greek and larynx means “upper windpipe” and syrinx means “pan pipe”. The larynx
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Do Brazil nuts come from Brazil? They do, but there are several other countries that produce them as well. Depending on the year, Bolivia is often a larger producer of Brazil nuts than Brazil is. Before we talk about why Brazil nuts are called Brazil nuts, we need to acknowledge the fact that they are
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Why are the majority of people right handed? No one knows for definite, but it could be because we process language with the left side of our brain. It is generally thought that 85 to 90% of people are right-handed. The majority of the rest are left-handed, with a very few individuals being ambidextrous. A
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How can a salamander regenerate? They can repurpose skin cells to become any other kind of cell, similar to a stem cell. There are many different types of salamander, about 760, but they all share several common traits. They are all amphibians, which means they are comfortable both in and out of the water. They
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Are big leaves better than small leaves? It depends on where the plant is, the temperature, the amount of water, the altitude, the amount of UV light, and several other factors. Not all plant leaves are green, but all plants have leaves. Those leaves can be big, small, long, short, fat, thin, and many other
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What is the fastest insect? The fastest flying insect is the dragonfly and the fastest running insect is the Australian tiger beetle. The Australian tiger beetle is the fastest insect on land. It can run at 2.5 m per second, which works out to 9 km/h. That doesn’t sound terribly fast and most of us
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