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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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The most common childhood diseases include croup, chickenpox, ear infections, flu, pneumonia, ringworm, respiratory syncytial virus, scabies, head lice, and asthma.

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It is difficult to obtain enough calcium without consuming milk or other dairy foods.

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Thyroid conditions may make getting pregnant impossible.

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