1.34 Describe how the orbit of a comet differs from that of a planet

1. Three differences between planets and comets are:
a. What are comets usually made from?
b. Comets have highly elliptical _____ compared to planets
c. Comets usually travel _____ than ____
d. Comets usually have long ______, made when the heat from the Sun which vaporises the comet

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