Ques: Q: Vitamin d is made in the skin when it is exposed to what? Choices: - darkness - water - dirt - sunlight A:
Ans: sunlight

Ques: Q: What do electrons lose during their transfer from organic compounds to oxygen? Choices: - mechanical energy - thermal energy - actual energy - potential energy A:
Ans: potential energy

Ques: Q: What type of plate is an island arc found on? Choices: - continental - coastal - shear - oceanic A:
Ans: oceanic

Ques: Q: What simple machine works with a wheel and axle in a wheelbarrow? Choices: - pulley - hammer - blade - lever A:
Ans:
lever