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If the frequency of a wave increases while its speed remains constant, the wavelength decreases i.e. the distance between successive crests decreases.
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Columbus set sail from Spain to find an all-water route to Asia.
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The FitnessGram Pacer Test is a multistage aerobic capacity test that progressively gets more difficult as it continues. Students begin at the starting line. Once the test begins, the running speed starts slowly, but gets faster each minute after you hear the signal (beep). A single lap (length of the basketball court), should be completed when you hear this signal (ding). The second time you fail to complete a lap before the sound, your test is over.
Earth is a large spherical landmass, which is divided into three major layers, known as crust, mantle, and core. The innermost layer of the Earth is the core.
<h3>What is the core?</h3><h3 />
- The core of the Earth is the innermost layer, present beneath the mantle and crust.
- The core is entirely made up of iron and nickel. The core of the Earth is also called NIFE, which symbolizes the elements present in the core, Iron (Fe) and Nickel (Ni).
- Core has a radius of approximately 1220 kilometers and is responsible for the generation of the magnetic field.
- Core also consists of the earliest history of the planet and is extremely hot, such that the temperature is close to the Sun's temperature.
Thus, the correct answer is Option D.
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