Answer:
Cyclic and over long periods of time
Explanation:
The extraction and use of scientific data is of paramount importance. This is because of the importance of future decisions based on the data. In prediction the future trends of data, the long-term application need to be taken into consideration. This means that the data needs to be cyclic, that is, can be applied using models. In addition, because of the future nature of the data, the data has to be used over a long period of time.
