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An object in the sky brightens suddenly,but shows no hydrogen lines in its spectrum.It is most likely a(n) :
Progressive Brain Disorder
A category of neurological disorders that worsen over time, affecting cognitive functions, motor skills, and various brain functions.
Memory Loss
A condition often described as forgetfulness or amnesia where an individual has difficulty remembering information or past experiences, which can be temporary or permanent.
Middle Adulthood
A developmental stage, typically considered to occur from ages 40 to 65, characterized by personal and professional growth, as well as preparation for aging.
Chronic Diseases
Long-lasting health conditions that typically progress slowly over time, such as diabetes, heart disease, and arthritis.
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