(Q).
Q: What move the body by contracting against the skeleton? Choices: - hormones - tissues - nerves - muscles A:
(A).
muscles

(Q).
Q: What are the ice crystals that form on the ground called? Choices: - snow - granules - sleet - frost A:
(A).
frost

(Q).
Q: What do we call zeros that appear after nonzero digits? Choices: - left-end zeros - significant digits - placeholders - right-end zeros A:
(A).
right-end zeros