The specialized structure called organelles are eukaryotic.
Well the main energy is the sun so I'm guessing it feeds itself by using the sun's energy? Hope you find this helpful
Blood goes from veins, to the heart, to the lungs, back to the heart, then to arteries
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Earth's climate has changed dramatically many times since the planet was formed 4.5 billion years ago. These changes have been triggered by the changing configuration of continents and oceans, changes in the Sun's intensity, variations in the orbit of Earth, and volcanic eruptions.Over the last 100 years (1906–2005), global temperature has increased by 0.74°C. ... More regional changes have also been observed, including changes in Arctic temperatures and ice, ocean salinity, wind patterns, droughts, precipitations, frequency of heat waves and intensity of tropical cyclones.
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