What is a superbug? A superbug are bacteria, viruses, or fungi that have developed resistance to many different types of drugs. We often hear about superbugs on the news. They wreak havoc on places like hospitals. They are very hard to deal with, and the people in the hospital usually have compromised immune systems, which […]
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How do ants act as a superorganism? Ants are a superorganism because all of the individual ants function together as a single being. They all have different roles and functions, just like the cells in our bodies do. Ants are not the only beings that act as a superorganism. Any species where all of the
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How do bats use echolocation? Echolocation works on the same principle as sonar in a submarine, but bats have special adaptations to be able to use it. The principle behind echolocation and sonar is that you send a sound wave out and then measure how long it takes to come back to you and the
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How do fires regenerate forests? Fires can regenerate a forest because they clear the thick canopy, they release nutrients into the soil, and they can trigger the dispersal of seeds from a lot of trees. As forests grow, they naturally get thicker and taller. Trees need sunlight and leaves to photosynthesize. If a tree cannot
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How does insect repellent work? Insect repellents work by either preventing the insect from detecting the signals given off by people or by using chemicals that insects don’t like. Insect repellents don’t have to repel all insects. They are generally designed to repel those insects that bite us. These are mostly mosquitoes, midges, ticks, and
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What causes color blindness? Color blindness is a genetic condition where the color sensing cones in the eye don’t function correctly. People with color blindness can see colors, but they cannot differentiate between some colors. The cause of color blindness comes down to the cones in our eyes because they are what detect color. At
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What do enzymes do? Enzymes are proteins that start and speed up chemical reactions in the body. Without enzymes, we could not survive. Without them, our digestion, respiration, and even muscles and nerves would not be able to function fast enough for us to live. There is no exact number for how many enzymes there
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Soap or hand sanitizer? Soap removes germs and bacteria by killing and then washing them away, while hand sanitizer kills them. Soap and hand sanitizer deal with bacteria and things like that in different ways. One of them is more successful than the other. Let’s have a look at them both. How does soap remove
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How does sunscreen work? Sunscreen works by either reflecting the ultraviolet rays back up, or by absorbing the ultraviolet rays. When we go out into direct sunlight, we are coming into a lot of energy that the sun is sending our way. The sun releases energy as electromagnetic waves in a whole range of wavelengths.
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Why is soil pH important? The pH of the soil affects what kinds of nutrients and chemicals can be absorbed by water and then taken up by plants. Some plants like a high pH and some like a low pH. PH is a way of measuring how acidic or alkaline something is. PH stands for
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