You can download answer here
tinyurl.com/wpazsebu
I believe the most recent was the 27th Amendment.
Research are likely to suggest that competitive encounters are likely to be more hard working while the collaborative encounters are the ones who will likely give their time to cooperate. It is because competitive encounters are usually competitive in a way of reaching their tasks or goals while the collaborative encounters are likely to just cooperate because of their knowledge with the given task.
A glass bottle would sink instead of floating if there was no air inside of it