Earth can be considered as a closed system, since it only receives sunlight (energy), while the overall mass stays constant, without (almost) any exchange from space. Another example of a closed system is a saucepan or frying pan, on a stove, when its lid is closed.
Answer: D. An emphasis on long term benefits.
Answer:
The coronavirus epidemic should slow buisness as of right now. Hope this helped
Explanation:
The correct answer is 40 to 45 percent
People holding regular manual or blue-collar jobs. Certain members of this class, such as electricians, may have higher incomes than people in the lower-middle class. Roughly 40 to 45 percent of the United States
