Any have goo. gle class room

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Physical needs include: a. the need for sleep b. the need to feel safe c. the need to feel secure d. all of the above

In which of the following conflicts did the distribution of ethnic groups act as a centripetal force? cyprus afghanistan north and south korea iraq former yugoslavia

Which of these is a disadvantage of hydrogen fuel cells? a. engines that use hydrogen fuel are more efficient than gasoline-powered engines. b. the only emission produced by hydrogen fuel cells is water. c. hydrogen fuel is continually available and useful for heating. d. hydrogen fuel is often purified in a process that emits lots of greenhouse gases.