I want to say government or farming. Farming because it started a sort of trade and barter system, but government because it created regulations for a village lifestyle? I think it depends on what time period you're studying.
Im pretty sure it’s option B
“your closed eyes move back and forth and you dream. your breathing and heart rate increase
Answer:
D. They run from north to south
The results of new evidences can bring about a change in scientific knowledge
Explanation:
Scientific knowledge is attained when there is experimental and observational confirmation. Scientific knowledge may also be subjected to change due to changes in the technology and the new tactics which are incorporated while observing the experiments.
It is also subjected to change when it involves totally a novel way of thinking and framing questions. When new evidences are observed regarding an experiment, the result of the experiment may change as a whole.