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observational study.
Because they wanted to observe them
Experiment
A peer Review
I'd say peer review.
No. If you carefully study or observe a subject it won't help you sleep better. You need to think and dream, not study or observe.
observational study.
observational study.
eyeball
observational study
Aristotle
Aristotle
Examinated means 1. to observe carefully or critically. 2. to study or analyse. 3. to test or check condition or health. 4. to determine qualifications. 5. tom ask a question formally.
This explains the reasons why the study is being carried out.
carefully
They learn whatever it needs to survive. Things like hiding when they see a net and going to a special place for food etc. Observe your fish and learn from them. They will teach you heaps if you are smart enough to study them carefully.
Scientists.