Answer:
The Moon
Now that humanity knows quite positively that the Moon is not a piece of cheese or a playful god, the phenomena that accompany it (from its monthly cycles to lunar eclipses) are well-explained. It was quite a mystery to the ancient Greeks, though, and in their quest for knowledge, they came up with a few insightful observations that helped humanity figure out the shape of our planet.
Aristotle (who made quite a lot of observations about the spherical nature of the Earth) noticed that during lunar eclipses (when the Earth’s orbit places it directly between the Sun and the Moon, creating a shadow in the process), the shadow on the Moon’s surface is round. This shadow is the planet’s, and it’s a great clue about the spherical shape of the Earth.
Explanation:
https://www.popsci.com/10-ways-you-can-prove-earth-is-round/
You forgot the choices, but i can list some of the important goals of the EU:
-to increase the standard of living among its citizens
-to prevent wars by providing economic dependence and Unity
-to make the EU as a whole a stronger power and market than all the countries separately.
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Thunderstorm
Thunderstorms are storms that consist of lightning, thunder, and strong winds. They are also often brief.
Answer:
Rockwool Culture: It is the most widely used medium in hydroponics
Settling basins is the correct answer
