question_answer

The solid core structure of a comet is known as the nucleus. The nucleus of a comet is composed of an amalgamation of rock, dust, water, ice and many frozen gases. Which of the following gases is the nucleus of a comet composed of?

A)  Carbon dioxide only

B)  Carbon monoxide and methane only

C)  Ammonia and methane only

D)  Carbon dioxide, carbon monoxide, methane and ammonia