Im pretty sure its true but not 100% correct .
The increased migration and increased population that the United States saw during (any) era are examples of "<span>c. demographic and environmental changes," since these have to do mainly with population distribution. </span>
Passed by Congress in 1969<span> and signed into law on </span>January 1, 1970<span>, the National Environmental Policy Act (NEPA) broke new ground as the first major Federal legislative effort to incorporate environmental considerations into all government decision-making. Hope this helps. :)
Answer: C.</span>
Answer:
d. our division of time into hours, minutes, and seconds.
Explanation:
The Sumerians were responsible for dividing time the way we do today. First, they determined that the day would begin at sunrise and end only if sunset, where the night would begin that would only end when the sun rose again. After that, observing the skies and their changes throughout the day and night, they developed a complex, but very efficient, division and timing system. They realized that the day could be divided into 24 hours and that each hour could be divided into 60 minutes, so each minute should have 60 seconds.
