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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.

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Most fungi that pathogenically affect humans live in soil. If a person is not healthy, has an open wound, or is immunocompromised, a fungal infection can be very aggressive.

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Illicit drug use costs the United States approximately $181 billion every year.

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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

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Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Indicator and umbrella species. Indicator and umbrella species.
Human Heart Model Human Heart Model
The beautiful blood vessels of the human body The beautiful blood vessels of the human body
Human population growth, 1700 - present Human population growth, 1700 - present
Similar-looking, related species that are native to distant geographic realms Similar-looking, related species that are native to distant geographic realms
Human mitochondrial transcription Human mitochondrial transcription
Video: HDL (high density lipoprotein)

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