A ____ is necessary to stop you from getting sick from ____. ____ ____ make renewable energy from wind. I can't get the machine to work, there is no energy left in the ____. Humans can't visit the ____ Jupiter because it is too far away. People should add ____ ____ to their houses to get energy from the sun.Scientists are trying to find a ____ for many illnesses. A ____ is somewhere that scientists carry out experiments.  A ____ is used to measure the ____ of something.  There is no ____ in space so everything is weightless. A chemical reaction can sometimes cause an ____

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