How does the path of the moon in the sky vary throughout the year

your answer

Explanation: The Moon follows generally the same path, but with some important differences. The Moon's orbit is tilted 5.1° relative to the ecliptic. So, the Moon can appear anywhere in a band extending 5.1° north (above) and south (below) of the ecliptic. Each month, the Moon twice crosses the ecliptic on opposite sides of Earth

why do the isotopes of a particular element behave differently in nuclear reactions but the same in chemical reactions? chemical reactions involve changes to electrons in an atom; isotopes do not differ in electrons, and so they react the same way during chemical changes.