Sunspots are temporary phenomena on the Sun's photosphere that appear as spots darker than the surrounding areas. They are regions of reduced surface temperature caused by concentrations of magnetic field flux that inhibit convection. Sunspots usually appear in pairs of opposite magnetic polarity.
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As the sweat evaporates off your skin, you cool down. Sweat is a great cooling system.
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(B)iology
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Biology is a branch of science that studies about the living organisms.
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CROSSING OVER is the exchange of segemetics of dna or genetic matierial between the members of the pairs of cromezones
