This is a tiny fluid-filled cavity in the cytoplasm. it can be used for storage of biochemicals.

The cell organelle that is been described in the question is VACUOLE.

Explanation:

Vacuole is one of the cell organelles that are found in both plant and animal cells although their sizes and numbers vary in these cells. In plants, the vacuole are bigger compare to those found in animal cells. Also, plant cells usually have one big vacuole while the animal cells typically have many small vacuoles. The vacuoles in animal cells are smaller and they are used majorly for the storage of biochemicals. Vacuoles also participates in exocytosis and endocytosis in animal cells.  

it takes hundreds of years to become stable.

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correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.