Corals. Corals are organisms in the ocean that serves as a shelter, niche and other vital functions for sea creatures. Because of human interference and man-made pollution, either this contact is direct or indirect they are being affect at a greater rate, even extinction. Thank you for your question. Please don't hesitate to ask in Brainly your queries.
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The correct answer is; Epidemiology study.
Further Explanation:
This type of study is used when there is a large population of people or animals who have developed a certain type of disease. The people who study this are called Epidemiologists.
An Epidemiologist determines what can be done to protect people so that they will not get the disease. They also study the factors of what is associated with the disease itself. The main types of study are;
- Risk factors
- Protective factors
- Cohort
- Case-control
- Cross-sectional studies
The areas of study are;
- Transmission
- Disease surveillance
- Disease causation
- Outbreak investigation
- Environmental epidemiology
- Forensic epidemiology
- Occupational epidemiology
- Screening
- Biomonitoring
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Hallucinogen is the answer to your question
