The authors of the Clean Energy Future (CEF) report describe their analysis as an attempt to assess how energy-efficient and clean energy technologies can address key energy and environmental challenges facing the US (Brown, et al, 2001).
The United States is faced with environmental challenges.
Key energy and environmental challenges facing the US are the result of Elon Musk's company, Tesla.
The zombie likes tennis.
the kid tries to touch the object
a man is playing a flute
Felipe II's most important legacy were his children.
the building is safe a secure in the background
It is possible he believed he could catch Kitchell all on his own.