*Question*
Q: What is it called when bones get longer and bigger? Choices: - expansion - replication - reproduction - growth A:
**Answer**
growth

*Question*
Q: What is the name of the black opening in the eye that lets light enter? Choices: - iris - cornea - inlet - pupil A:
**Answer**
pupil

*Question*
Q: What is the leading cause of death worldwide? Choices: - lung disease - cancer - liver failure - coronary artery disease A:
**Answer**
coronary artery disease

*Question*
Q: All elements are most stable when their outermost shell is filled with electrons according to which rule? Choices: - quartet rule - string rule - coupling rule - octet rule A:
**Answer**
octet rule