They manipulated the length of time between seeing and recalling sets of 3-letter stimuli while preventing rehearsal.
Answer:
gas
Explanation:
According to National Geographic, "Stars are huge celestial bodies made mostly of hydrogen and helium that produce light and heat from the churning nuclear forges inside their cores." Which basically means they're big balls of gas
hope this helps:)
The correct answer is child-free. Child-free is being
defined or pertained to adults who are likely to live their own life and grow
without having to bear with children or even to live one with a child of their
own or a child.