Q: Although humans require it, what accounts for just one percent of all water on earth? Choices: - snow - salt water - glaciers - fresh water A:
fresh water

Q: What system of organs delivers blood to all cells of the body? Choices: - gastrointestinal - respiratory - integumentary - cardiovascular A:
cardiovascular

Q: Q: Microwaves are converted into what kind of energy in a microwave oven? Choices: - solar energy - mechanical energy - light energy - thermal energy A:
A: thermal energy

Question: Q: An axe head and a doorstop are types of what simple machine? Choices: - pulley - blade - lever - wedge A:
Answer: wedge

*Question*
Q: The direction of prevailing winds determines the type of what that usually moves over an area? Choices: - storm - water mass - weather - air mass A:
**Answer**
air mass

Q: How many moons does pluto have? Choices: - six - two - four - three A:
three