It brought prosperity to many parts of the Central America , helped protect rain forest's , and improved trading with other countries
The falaj system in was used to transport water to farms and villages
Support:
I agree with this comment. The United States is a nation, whether people like it or not. We have to work together against other nations in order to survive. The state that is saying this comment also agrees with it since it knows it has other states it has to work with. We can achieve goals easier and faster if we all communicate together as a nation.
Refute:
The United States is not a nation. We have wars and fight with each other. We are enemies and we must work alone as states. We must prepare for fight with other states in this country and we must prepare to win. If we work together as a nation, we could all win and that would not be the goal. We want to be the top and not let others rise with us.
Hope this helps! I wrote this on my own, so it is based on my opinion. It still answers the question though! Thanks for posting! :)
Answer:
Positive Pion, Negative Pion and Neutral Pion
Explanation:
Pi-meson or also known as pion is one of any of the three (3) subatomic particles which characterizes of being unstable of its nature. The charged pions
π+
and
π−
decay with a mean lifetime of 26.033 nanoseconds or 2.6033×10−8 seconds, and the neutral pion
π0
decays with a mean lifetime of 84 attoseconds (8.4×10−17 seconds).
