Answer:
naturalistic observation
Explanation:
In naturalistic observation, researchers will gather data by directly observing the subjects in their natural habitat without making any intervention.
This is what Professor Ober is doing.
Professor Ober wants to collect a data about development of their physical skills among children. This means that the <u>children are his research subjects.</u>
To collect his data, professor Ober observed the children in the playground (which is the children's natural habitat). He also did not told the children to do anything , he just quietly observe and let the children do what they usually do. (not making any intervention)
Muscle ischemia is the pathophysiologic alteration precedes crush syndrome after prolonged muscle compression
Physiological and the anatomical studies show that when irreversible muscle cell damage starts after 3 h of the ischemia and is nearly about complete at 6 h. These muscle is going to changes are paralleled by the progressive of microvascular damage.
The most common symptom of the myocardial ischemia is called as angina (also called angina pectoris). This is the chest pain (similar to the indigestion or the heartburn) that feels like: Chest discomfort and some Heaviness.
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Answer:
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2 plantation system of the Caribbean
