How does kidney dialysis work? Kidney dialysis works by filtering the blood to remove excess water and toxins in cases where the kidneys have failed. Most people have two kidneys, although we can function perfectly on only one. The second one is basically an evolutionary backup in case one of them fails. This is called […]
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What is compost? Compost is a mix of materials that can fertilize plants and improve the condition of soil. It is also an excellent form of waste management. It is difficult to get accurate figures on how much food is wasted every year because there is no true way of measuring it. I live in
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What is a whale fall? A whale fall is when a whale dies and falls to the bottom of the ocean, providing a sudden food source. A whale fall has different stages that can last for several years. A dead whale can provide an enormous amount of food for other sea life. It is difficult
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How do green roofs help? Green roofs help by cooling cities and by insulating houses. They absorb heat, absorb rainwater, cool the air around the building, and act as insulation as well. I suppose the first thing to look at is the fact that the plural of roof is roofs, not rooves. Apparently, rooves is
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Why do termites eat wood? Termites eat wood to get its cellulose. Termites are small insects that tend to live in nests. They look like ants and are often called “white ants”, but they are more closely related to cockroaches than ants. Termites are also not all the same. There are 3,000 different species of
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Do flying fish really fly? No, flying fish don’t really fly, but they can glide through the air for some considerable distance. Flying fish are sometimes known as flying cod, but they are not cod. When cooked, they are said to taste like cod, which could be where the nickname comes from. They are a
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How does an X-ray machine make an image？ An X-ray makes an image because some parts of the body absorb X-ray radiation and some parts of the body don’t. Bones absorb the majority of it and appear white. X-rays are a type of electromagnetic radiation with a wavelength between 10 nanometers and 10 picometers. There
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What is a kelp forest? A kelp forest is a dense area of kelp in the sea. Kelp is a type of algae. They form incredibly diverse ecosystems, and they can help to clean up the sea. Kelp are giant strands of brown algae, probably more commonly known as seaweed. They look like plants, but
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How do seedless fruit reproduce? Seedless fruit don’t produce viable seeds, so they can’t reproduce, but they don’t need to because they are produced by breeding two different plants that can produce fruit with seeds. These days, we can buy fruit with seeds, and we can usually buy seedless varieties of fruit as well. Watermelon
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Why does coral bleaching occur? Coral bleaching primarily occurs because heat stress causes the coral to expel the algae that give them their beautiful colors. If you go diving in a tropical region, you will probably see enormous numbers of coral. They should be a whole range of beautiful colors, but these days, enormous numbers
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