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What is the ultimate base level for a stream?
Evolutionary Change
The process through which species undergo changes over time due to genetic variations and natural selection.
New Mutations
Genetic alterations that occur for the first time in a DNA sequence, contributing to genetic variation and potentially to evolution.
Fitness
The genetic contribution of an individual to subsequent generations, often measured by the individual's reproductive success compared to others in the population.
Influenza Virus
A highly contagious viral infection that attacks the respiratory system, causing symptoms like fever, cough, and aches.
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