The understanding of gravity was essential in the developmentof Albert Einstein theory of relativity. Which describe relationships between matter and motion.
The answer would be C. Germany has recently changed the legal retirement age to 67.
In Russia, after the global financial crisis in 1998, Russia became a major exporter of grain after 2001.
So as to find the pattern repeat. Patterns are why we do what we do, the way we do them & how we do them, while observing who we'd most like to be or look like or have the possessions of.
I think the answer is A)Natural Springs
