The answer: Periods form horizontal rows, groups form vertical columns
Explanation:
The horizontal rows on the periodic table are called periods, while the verticals columns are called groups. Elements that are in the same group have similar properties. For example Group 1 is called the alkali metals. These are all soft, reactive metals.
Pluto's orbit is within the Kuiper Belt and has a special relationship to Neptune's orbit.
Answer:
An antenna
Explanation:
Radio waves are received by antennas
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