What Is The Potential Energy Stored In The Spring?
Elastic potential energy is stored in the spring. What is the potential energy of a spring? It is the energy, stored in a compressible or stretchable …
Pets and Animals
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Why Were Animals Important In Prehistoric Times?
Animals played an important role in prehistoric societies. They were a source of food, raw material, and, sometimes, reverence . Their bones were also…
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What Were The Symptoms Of The Three Types Of Plague?
Bubonic plague: Patients develop sudden onset of fever, headache, chills, and weakness and one or more swollen, tender and painful lymph nodes (called…
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When Did The Boy In The Plastic Bubble Die?
Vetter became known as “The Bubble Boy” after he was placed in a germ-free plastic bubble that he lived in for 12 years . When he died at age 12 after…
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What Is Reproduction Why Is It Important?
Reproduction is the process by which new individuals are produced by the parents. The process of reproduction ensures that a plant or animal species d…
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Why Is Exposure To Toxins Especially Dangerous During The First Trimester?
Exposure to certain environmental chemicals has been linked to birth defects ; premature deliveries, stillbirths, and infants with low birth weight; a…
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What Kills Canadian Thistle?
Canada thistle can be killed with weed killers . The best time to apply these is on sunny days when the temperatures are between 65 and 85 degrees F. …
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What Is Reproduction Of Social Class?
Social reproduction refers to the set of processes by which the classes in an unequal society tend to replicate their status from one generation to th…
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What Is John Snow Best Known For?
John Snow (shown below) was a physician in London who spent several decades studying cholera in a systematic way. He is most often credited with solvi…
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Why Was Salmon Genetically Modified?
The purpose of the modifications is to increase the speed at which the fish grows without affecting its ultimate size or other qualities . Fish-farmed…
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When True Breeding Pea Plants With Purple Flowers Are Crossed To Plants That Have White Flowers?
Mendel discovered that by crossing true-breeding white flower and true-breeding purple flower plants, the result was a hybrid offspring . Rather than …
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What Was The CO2 Level In 1980?
Year Mauna Loa 1979 336.84 1980 338.75 1981 340.11 1982 341.45 What was CO2 ppm in 1980? Carbon