A researcher uses deduction to formulate a hypothesis and then forms a theory. It can be said that a theory is never proven when a theory holds only until some evidence comes forward to disapprove it.
In addition to explaining existing facts, a theory also enables scientists to forecast what observations they should expect to see if the theory is correct.
- Scientific hypotheses can be tested.
- A theory should be consistent with new data.
- If not, the theory is changed or abandoned.
The most comprehensive explanations for how the world functions are currently found in accepted theories. They have undergone extensive testing, are backed by numerous lines of evidence, and have shown promise in developing explanations and revealing new study fields.
But science is always evolving, and even hypotheses can alter.
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For doctors
and nurses to obtain an accurate result during a complete physical examination
of a patient, the necessary equipment and supplies should be prepared before
the procedure. Here’s a list of the things that should be present in getting a
patient’s blood and urine specimens:
For urine
specimen:
<span>-
</span>Sterile specimen cup = obtained from the
laboratory
<span>-
</span>Cotton ball = to clean the area before
urinating to avoid entry of external bacteria
For blood
specimen:
<span>-
</span>Sterile syringes
<span>-
</span>Blood culture bottles
<span>-
</span>Alcohol swab = to clean the area where the blood
sample will be taken
<span>-
</span>Sterile cotton balls
<span>-
</span>Gloves
<span>-
</span><span>Tourniquet</span>
Answer:
C. An AED
Explanation:
A portable device that examines a person's cardiac rhythm and administers an electric shock to the heart is known as an automated external defibrillator (AED).
