(Question)
Q: In mammals, four specialized types of what serve to cut, tear, and grind food? Choices: - scales - plates - spines - teeth A:
(Answer)
teeth

(Question)
Q: Forces which cause objects to turn around continuously in a circle are known as? Choices: - frictional forces - tension forces - hydrodynamic forces - centripetal forces A:
(Answer)
centripetal forces

(Question)
Q: How does the number of protons compare to the number of electrons in an electrically neutral atom? Choices: - they are half - they are double - they are triple - they are equal A:
(Answer)
they are equal