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Signs of depression include feeling sad most of the time for 2 weeks or longer; loss of interest in things normally enjoyed; lack of energy; sleep and appetite disturbances; weight changes; feelings of hopelessness, helplessness, or worthlessness; an inability to make decisions; and thoughts of death and suicide.

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Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.

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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.

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Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

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The familiar sounds of your heart are made by the heart's valves as they open and close.

Time dependence of the rates of a chemical reaction Time dependence of the rates of a chemical reaction
Sample Exercise Program for Limited Older Adults (cont.) Sample Exercise Program for Limited Older Adults (cont.)
Example of an employee setup screen in a computerized payroll program. Example of an employee setup screen in a computerized payroll program.
A Successful Physical Fitness Program Uses FITT Principles A Successful Physical Fitness Program Uses FITT Principles
Flexible exchange rates are supposed to prevent long-term trade deficits. Flexible exchange rates are supposed to prevent long-term trade deficits.
A non-interest-bearing five-year note for $54600.00 issued May 1, 2015, is discounted April 1, ... A non-interest-bearing five-year note for $54600.00 issued May 1, 2015, is discounted April 1, ...
Video: Origin of organelles Animation

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