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The diagram below illustrates the production process of olive oil.

The diagram shows how to produce olive oil. Overall, the process of olive oil extraction can be divided further into two main stages: producing olive paste, which is the main ingredient to extract olive oil, and processing olive oil. It is also clear that several machines are employed throughout this process.
Initially, harvested olive fruits are stored in a collection vat, and then sent to the next stage, where leaves are removed and fruits are washed. Rinsed olive fruits are crushed using a special mill to produce olive paste. The olive past is then mixed at a temperature of 27 degrees Celcius in a malaxer.
Olive oil production is a complex process with alternative methods. Firstly, virgin olive oil is extracted from the olive past with a device called centrifugal press. The by-product – pomace – is send to other refining facilities for further processing.
Virgin oil can follow either of the two methods: the first way is to decantate the oil to separate it from hard matter, which is stored at the bottom of the decantation device. Alternatively, a separating machine can be used to remove waste water to produce pure oil. Oil from both methods is then kept in a storage tank.

7.0

The essay is logically organized with clear stages of the process described. However, some transitions between steps could be smoother.

Suggestions
  • Use linking words to improve flow.
  • Clarify the sequence of steps more explicitly.
  • Ensure each stage is distinctly separated.

The essay uses a range of vocabulary appropriate for describing a process, though some terms could be more precise.

The essay demonstrates a good range of grammatical structures, but there are some errors that affect clarity.

The essay successfully describes the process depicted in the diagram, covering all key stages and details.