Q: Tigers and household cats are members of the same family; however, their sizes are vastly different. What is the cause of this difference?
A: genetics

Q: A reflex can protect the body from harm. Which organ systems work together to produce a reflex?
A: nervous and muscular systems

Q: What is the smallest particle of the element gold (Au) that can still be classified as gold?
A: atom

Q: One important difference between living things and nonliving things is that only living things have
A:
cells