The Constitution begins with the Preamble, which states the basic mission and goal of the document, and then goes on to describe the different aspects of the government in varies articles. And since the Founding Fathers wanted the Constitution to be able to "adapt" to new times, they allowed for amendments to be made to it.
This should be under a Science not history, but the answer is
D. visual perception
Music is present in every part of our lives. Our spiritual rituals are framed with songs, children learn the alphabet through song and the malls and cafes we visit during our leisure time are rarely silent.
But just how much can this ever-present thing impact us -- and the way we act and feel? Research suggests music can influence us a lot. It can impact illness, depression, spending, productivity and our perception of the world.
Some research has suggested it can increase aggressive thoughts, or encourage crime.
Chemical weapons
Both sides developed lethal forms of chemical welfare that resulted to death of thousands in the trench war.Germany was the first to employ chemical weapons and it is estimated that over 10,000 tonnes of chemical gas, lethal and poisonous was blown.