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Dopamine, like caffeine, increases the heart rate of Daphnia in a dose-dependent manner. Dopamine's effects on Daphnia's heart has not been reported previously. ... Caffeine showed a similar effect on Daphnia's heart rate at a 10-times lower concentration than dopamine (28.5% increase at 0.08 mg/ml, Figure 2).
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<h3>The magnetic field is generated by electric currents due to the motion of convection currents of a mixture of molten iron and nickel in the Earth's outer core: these convection currents are caused by heat escaping from the core, a natural process called a geodynamo.</h3>
The trade winds (additionally called trades) are the predominant example of easterly surface winds found in the tropics, inside the lower segment of the Earth's environment, in the lower area of the troposphere close to the Earth's equator. The trade winds blow dominatingly from the upper east in the Northern Hemisphere and from the southeast in the Southern Hemisphere. From 0-30 degrees scope
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