Your answer is a, b and c
Answer:
Business Cycle
Explanation:
Business Cycle -
It refers to the upward or downward movement of the gross domestic product , is known as business cycle.
It is also known as trade cycle.
These movement are short - run , i.e. , for very short time span .
Hence, from the given information of the question , the correct term is business cycle .
Demographic Transition
Population aging is a by-product of the process known as "<em>Demographic Transitioning</em>." This process is determined mostly by fertility and mortality rate. For example: a population that has a high fertility rate has a low amount of older people, and vise versa.
During a Solar Eclipse and the other thing is the Corona, the Corona is Latin for crown and is the shining white part that you see around the moon during a Solar Eclipse
