Answer:
Use the drop-down menu to select whether the underlined text is a cause or an effect.
As the nuclei meld, a smidgen of their matter vaporizes into energy.
✔ effect
Soon the pressure in the center is so high, it ignites a booming nuclear reaction.
✔ cause
As the star material rushes outward, the star grows and grows until it is a supernova, or super star.
✔ effect
In the star's center, the gas is so energized that it has become a sort of super gas, called plasma.
✔ cause
Step-by-step explanation: