Refer to the figure showing the vertebrate nephron. 
Identify structure 4.What is its function?
Definitions:
Performance Rating
An evaluation of an employee's or machine's work output against a set standard or within a specific period.
Normal Time
The standard time that a task or operation should take under normal working conditions, used in planning and scheduling.
Standard Time
The amount of time prescribed for the completion of a job or task, based on average speed and efficiency under normal conditions.
Variable Allowance
An allowance or adjustment made for changes in costs or expenses that may vary over time, often used in budgeting and pricing.
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