stages and this is a man-made process
Use the word "man made" in reference to its noun form for grammar accuracy. Indicate "in this man..." instead rather than the connecting word "and" to create sentence clarity.
on the cacao tree in S.America, Africa, Indonesia
For clarity and information separation indicate these as " ... ' cacao trees from the countries of..."
missing a comma to indicate information separation.
in regions with a tropical climate
Added information not found in the procedure. This is unnecessary and will not increase your score.
Following that they are sent to a machine for classifying,
Invalid information. This illustration is not found in the drawing. These types of errors will affect your TA score.
Your main errors relate to GRA and task accuracy presentations. You have a tendency to make up information along the way. While you may think you are filling in the blanks, the reality is, your score will be based on actual provided information. Any inserted information will be seen as misleading the reader and will lower your TA and C + C score.