The answer is B. Because as the population continues to grow there will be less fresh water and more salt water.
They can help because although they all do things a bit different from each other it all works out. As an example Roosevelt was a republican but he was also a progressive and so he leaned to a more democratic view but when he handed his job to Taft who was full on republican, even though he changed a few things he still developed.
They all killed millions of people
It could be argued that the overall purpose of John F. Kennedy’s inaugural speech was "<span>to inform the nation and the world that the US is ready for war if necessary," since Kennedy wanted to project an image of power and confidence. </span>
