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What are some injuries or disorders of the skeletal system?
Fractures: This is when bones break due to an external force that it cannot withstand. There many forms of fracture so I'll give only the 2 common ones, simple and...
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What are some examples of diseases and disorders of the muscular system?
Myalgia means muscle pain. Myositis means inflammation of muscular tissue. Muscular dystrophy is an inherited muscular disorder, occurring most often in males, in which the muscle tissue degenerates over time,...
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How would the stellar parallaxes observed from Pluto compare with those observed from Earth?
Stellar parallax on Earth is performed by measuring the position of an object and then measuring it again 6 months later when is at the opposite side of its orbit....
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What physical process generates a force inside a pre-main-sequence star to offset the force of gravity and stop the star from slowly condensing and shrinking, thus producing a stable, non shrinking main-sequence star?
Stars are formed when a cloud of gasses, mainly hydrogen, collapse due to gravity. As more and more gas accumulates the temperature rises. The temperature creates an outward thermal pressure....
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Why do developmental scientists believe that the male sex is associated with a higher cumber of sex-linked inherited disorders?
The female has two X chromosomes while the male has only one X chromosome. If there is a mutation on one X chromosome the female has another X chromosome that...
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What type of cancer causes the most deaths in males?
As per Unity Health, most dangerous cancers(for male) are 1. Lung and Bronchitis 2. Prostate 3. Colon and Rectum 4. Pancreas 5. Liver For more info check out
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For an X-linked recessive trait, 9% of the females in the population are affected. What percent of the males would be affected? What percentage of the population is represented by the carriers?
Castle Hardy Weinburg for the female population only: $1 = q^2 + 2*p*q + p^2$ $1 = q + p$ where it tells you that $p^2 = 0.09$,...
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Why does cutting off the tip of the main stem ofa plant often result in the plant growing bushier?
The phyto hormone i.e., auxins are produced at the apex of the plants. This hormone is responsible for apical dominance by checking the growth of the lateral branches.. The pruning...
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What is the shortest time period over which evolution has been observed? Is evolution something that always takes many many years or has it been observed over short time periods in fast-breeding animals?
Evolution of complex animals like horses or felines takes millions upon millions of years. You canusually only track it with fossils. ? Sometimes less than two weeks. Maybe shorter. Shortest...
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In an experiment, a colour change is observed, and also observed is prolonged bubbling. Is this a chemical change?
Chemical change is characterized by the formation of new substances, and the making and breaking of strong chemical bonds. This is usually signalled by a color change, because the evolution...
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