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The Scientific Method is a systematic procedure for solving problems and exploring natural phenomena:

1.Observations (data)

are the foundation of the scientific method

data can be qualitative or quantitative.

data is most useful when collected under controlled conditions (experiments)

experiments must be repeatable and reproducible.

2. Natural laws

compactly summarize patterns in a large amount of data

often apply only under special conditions

are descriptions of nature, not facts or explanations.

3. Hypotheses

tentative explanations designed to guide experimentation

a useful hypothesis must be testable

must be rejected or corrected when they conflict with experiment.

4.Theories

a well-tested explanation for experimental data based on a set of hypotheses.must be discarded or refined when they can't explain new experimental results

scientific theories have three aspects: philosophical, mathematical, and empirical.

Understand all three, or risk misusing the theory!

a good theory...

explains currently available data

is as simple as possible (but no simpler!)

accurately predicts results of future experiments

suggests new lines of work and new ways to think

clearly shows underlying connections.

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Q: What are the first steps scientist take to analyze the cause of a disease?
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Most virus have been named for the disease they cause or?

Or the scientist who discovered it, or the first patient to come down with it.


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Immediate cause is the first cause identified when a person is suffering from a disease. For example, if a baby is suffering from loose motions,we can say that the cause of the loose motions is an infection with a virus. So, the immediate cause of the disease is virus.


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The two general ways that bacteria cause disease ...... First is the body immunity as it decrease the bacteria easily cause disease. Second is the favorable environment for the bacterial growth.


When the patient is being treated for a condition that has an underlying cause?

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