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Best sight
Among all creatures, birds of prey possess the most remarkable visual acuity, with certain hawks and eagles believed to have vision eight times sharper than humans. In fact, an eagle’s retina contains approximately 1 million sensory cells per square millimeter, which is around five times the density found in the human retina. This exceptional eyesight…
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Plasma
From a scientific perspective, matter in the known universe is typically classified into four states: solid, liquid, gaseous, and plasma. The fundamental difference among solids, liquids, and gases lies in the strength of the bonds that hold their constituent particles together. The binding forces in a solid are relatively strong, weak in a liquid, and…
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Breathing
To grasp the cycle and essence of breathing, let us begin by understanding its definition. Breathing is the mechanism through which our lungs receive oxygen and expel carbon dioxide. The act of breathing is essential for our survival as it supplies the necessary oxygen required for sustaining life. Air enters and exits the lungs through…
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Acid rain
Acid rain refers to rainfall that contains a higher concentration of acid than normal. The primary cause of acid rain is the emissions of smoke and gases from factories and vehicles that rely on fossil fuels. When these fuels are burned to generate energy, the sulphur within them combines with oxygen, transforming into sulphur dioxide.…
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The Sun
The sun, a brilliant celestial body, resides at the center of our solar system. It illuminates the vast expanse of space as a scorching sphere composed of radiant gases. In fact, it commands an overwhelming share of the solar system’s mass, encompassing nearly 99% of its total. Through its gravitational force, the sun maintains the…
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Light and Sound
Exploring Vibrations and Photons In our surroundings, what we perceive as sound is, in fact, the vibration of particles. Sound travels through a medium via these vibrations, which propagate as a type of disturbance. Contrary to popular belief, sound does not travel as a physical entity but rather as a wave transferred through particles via…
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Volcano
A volcano is a phenomenon that occurs when the crust of large celestial bodies, such as planets, experiences an eruption. During a volcanic eruption, hot lava, gases, dust, and ashes escape from the surfaces, like the Earth’s surface. These eruptions are often associated with the movements of tectonic plates, whether they are diverging or converging.…
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Metal Money
In ancient times, the concept of using cattle as a form of currency was prevalent. However, carrying cattle around for trading or shopping purposes was not practical. As a result, people sought a more convenient method of exchange, leading to the emergence of metal as a medium of transaction. Historians suggest that as early as…
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