Answer: d. Confounding
Explanation:
In the context of a scientific study such as this one, a confounding factor is one that has influence on both the exposure and event variable(s), which may lead to over- or underestimation of the direct relationship between them (if any).
For instance: In this example, researchers may have had reason to believe that male gender is associated with both higher risk of obesity (the exposure variable) and adult-onset asthma (the event variable). If gender is not taken into account, one may claim that the finding of an association between obesity and asthma is simply an artifact due to the high proportion of male patients (likely to present with both). <em>Controlling</em> for that variable (such as by matching, as in this example) allows researchers to test for this hypothesis.
Based on the diagnostic tests for acromegaly, high levels of growth hormone after intake of a sugary liquid indicates acromegaly.
<h3>What is acromegaly?</h3>
Acromegaly is a hormonal disorder which occurs when the pituitary glands produces excess growth hormones resulting in extra large faces hand and feet in the individuals affected.
Acromegaly can be diagnosed by:
- IGF test- high IGF-I level can indicate acromegaly.
- Oral glucose tolerance test - high levels of growth hormone after intake of a sugary liquid indicates acromegaly
Learn more about acromegaly at: brainly.com/question/4940609
Answer: Carbon-14
Explanation:
Carbon dating the procedure which is used for the substances which is used to date the substances less than 40,000.
This method is based on an unstable isotope of carbon that living animals and plants incorporate inside it.
When the organisms are alive the ratio of stable isotope inside the organism is same to the ratio that is found in the atmosphere.
As the organism dies the carbon 14 gets converted into nitrogen 14. By measuring both the ratios, the relative age can be determined.
