George Washington is 67 years old
I believe the answer is: <span>they can function well on 6 hours or less of sleep
On average, an adult need around 7-8 hours of sleep in order for their brain to function on optimal Level. Short sleepers on the other hand, could function T
The energy level that short sleepers achieve became the main thing that differentiate short sleepers with sleep deprived (A lot of people in large cities actually receive less than 6 hours slee but it's because they have too much work)</span>
The correct answer is D.
John Muir (1838-1914), also known as the <em>Father of the National Parks</em> contributed through his activism to the presevations of US wildlands, such as Yosemite Valley or the Western forests.
He founded the environmental organization <em>Sierra Club. </em>He also wrote many articles and up to 10 books, describing his travelling experiences and enthusiastically promoting echological behaviours and preservation principles.
