In addition, ethyl butyrate is often also added to orange juice, as most associate its odor with that of fresh orange juice. Ethyl butyrate is one of the most common chemicals used in flavors and fragrances.n addition, ethyl butyrate is often also added to orange juice, as most associate its odor with that of fresh orange juice. Ethyl butyrate is one of the most common chemicals used in flavors and fragrances.
We have different time zones because if we all set our clocks to the same time noon would be the middle of the day in some places, but it would be morning, evening and the middle of the night in others. Since different parts of the Earth enter and exit daylight at different times, we need different time zones.
Review Questions. 1  The globe is divided into time zones, so that any given hour of the day in one time zone occurs at a different time in other time zones. 2  Explain how Earth's tilt on its axis accounts for seasons on Earth. 3  Explain how the positions of the Earth, Moon, and Sun vary during a solar eclipse and a lunar eclipse.