The official President of the Senate is the Vice-President. (https://www.senate.gov/reference/Index/Vice_President.htm) so that might lead to some conflict between the branches of government. Imagine if the President could order his deputy to decide who was on which committee or who could speak during a proceeding. The executive branch could shape the Senate by putting members of their party in positions of power even if they did not have a majority.
The stipulative definitions are those that express the meaning of the words through definitions agreed <em>by a group and a context</em>, in that sense it is different from the lexical definition because the latter is the meaning that is had for the name in a significant group as a society .
Stipulative definitions are often used to give precision to a new concept or an abstract idea, or to resignify an existing term.
Answer
B. Stipulative definitions often begin as slang among groups, as these definitions are contextual.
Human/environment interaction is how people adapt to, depend on, and modify their environment. For example, in tropical areas people adapt to the weather by wearing shorts and t-shirts instead of winter coats, depend on the wildlife and plants for food, and modify the land to grow crops and create farmland.