The fever of unknown origin, or the FUO can be defined as the condition when the body temperature of a person is at 101 degree Fahrenheit for at least a period of the three weeks without any observable underlying cause. The most common causes of the FUO includes, infections (such as Lyme disease, tuberculosis), malignancy (such as leukemia), inflammation (such as inflammatory bowel disease), and alcohol or drug abuse.
<em>Answer:</em>
<em>van der Waals forces</em>
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<em>Method:</em>
Online, and other sources to make sure the answer is correct.
By dating the rocks in the ever-changing crust, as well as neighbors such as the moon and visiting meteorites, scientists have calculated that Earth is 4.54 billion years old, with an error range of 50 million years.
Answer:C
Explanation:if the few surviving amphibians reproduce and their young ones too survives, then it is genetic drift
