Which two characteristics of data always occur together?

High accuracy and good validity.

Explanation:

Data are codes that constitute the raw material of information, that is, the untreated information that is not relevant yet. They represent one or more meanings of a system that alone cannot convey a message or represent any knowledge.

To ensure that a piece of data is correct, we must observe whether the data provides high accuracy and good validity. The high precision indicates that a data is close to the true value of something and that the information is specific and concrete, on the other hand, the good validity indicates that the data is correct and in perfect condition to be used.

the answer is lactic acid from anaerobic respiration. the acid in lactic acid is what creates sore and burning muscles. if you think about how acid burns that will give you a clue for questions like this.

you can have just about every answer you can think of