Where does gold (the element) come from?
A) It is produced by mass transfer in close binaries.
B) It is produced during the supernova explosions of high-mass stars.
C) It is produced during the late stages of fusion in low-mass stars.
D) It was produced during the Big Bang.
Question 2
The large moons of Jupiter have low densities suggesting compositions that are a mixture of rocky materials and ________.
Fill in the blank(s) with correct word