Q: Vibrating objects such as drumheads produce what? Choices: - negative ions - light - heat - sound energy A:
sound energy

Q: What forms as a result of decomposition when n2o is heated? Choices: - ammonia and nitrogren - nitrogen and hydrogen - calcium and oxygen - nitrogen and oxygen A:
nitrogen and oxygen

Q: Q: A system in what state cannot spontaneously change, and therefore can do no work? Choices: - equality - balance - stability - equilibrium A:
A: equilibrium

Question: Q: Tuataras, lizards, and snakes are members of what subclass of reptiles? Choices: - dinosaurs - arthropods - staurikosaurus - lepidosaurs A:
Answer: lepidosaurs

*Question*
Q: In which human organ do the juveniles develop into sexually mature adults? Choices: - liver - tissues - muscles - intestines A:
**Answer**
intestines

(Q).
Q: What is the effect on pressure when the area of applied force is very concentrated? Choices: - direction increases - pressure disperses - pressure reduces - pressure increases A:
(A).
pressure increases