The particles in both gases and liquids select one: a. consist only of atoms. b. can change positions with other particles. c. vibrate in fixed positions. d. are packed closely together.

If a || b and e || f, what is the value of y ?

Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?

This drawing shows a human body system. what is the primary function of this body system?