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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

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Asthma occurs in one in 11 children and in one in 12 adults. African Americans and Latinos have a higher risk for developing asthma than other groups.

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You should not take more than 1,000 mg of vitamin E per day. Doses above this amount increase the risk of bleeding problems that can lead to a stroke.

Species of the algal genus Dinobryon not only photosynthesize, but are also efficient predators of b Species of the algal genus Dinobryon not only photosynthesize, but are also efficient predators of b
Psychoactive substances: (left) Psilocybin is obtained from a species of mushroom; (right) LSD is ... Psychoactive substances: (left) Psilocybin is obtained from a species of mushroom; (right) LSD is ...
A karyogram of the human chromosome set, showing the distinctive banding pattern of each chromosome. A karyogram of the human chromosome set, showing the distinctive banding pattern of each chromosome.
Human Lungs (Respiratory System) Human Lungs (Respiratory System)
The photo is a cross-section of thickened human skin The photo is a cross-section of thickened human skin
Cladogram showing genetic distances and relationships between human populations Cladogram showing genetic distances and relationships between human populations
Video: Predator- prey competition and symbiosis

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