20C
The average is getting the total number of data points and diving by the number of how many data points were added together.
Average is similar to mean. Mean in statistics is the level where all the data points fall into or just simply the average point.
The answer is bladder
The bladder stores urine and when the brain signals to release (when we have to go pee) it releases the urine through the urethra. The answer is not kidney because it doesn’t STORE the urine it filters waste and toxins in the body into the urine to be released from the body, the actual bladder itself is the organ that stores the urine in the body.
Erosion shapes. Lowest level directs.