(Question)
Q: Birds have air sacs that store inhaled air and push it into their what? Choices: - beaks - bones - abdomens - lungs A:
(Answer)
lungs

(Question)
Q: Footprints, burrows, and waste are considered what type of fossils? Choices: - movement fossils - crater fossils - morphology fossils - trace fossils A:
(Answer)
trace fossils

(Question)
Q: What is rusting an example of? Choices: - radiation change - Decomposition - contamination change - chemical change A:
(Answer)
chemical change