The first one should be the one if its not sorry
Puberty begins when the pituitary gland secretes pituitary into the bloodstream to affect the sex organs.
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So that the patient knows the like risks. Operations and such are a liability and they have some pretty huge risks generally. You need to know their allergies and other things. Its very necessary.
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Answer:
Intervention study
Explanation:
An intervention study is a type of controlled clinical trial in which an intervention is applied to a group of people and the outcome is compared to a similar group without the intervention. An example of this type of study is shown in the question above, where a margarine which vegetable ingredients (which is the intervention) will be given to a group of people, so that their blood cholesterol levels are compared to the cholesterol levels of a group of people who didn't use this margarine.
