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What is newborn and observes central cyanosis. what type of congenital heart defect usually results in central cyanosis?
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Which of the following is a reason why early living organisms on earth could not have survived on the surface? 1. the lack of an ozone layer 2. the lack of oxygen in the atmosphere 3. the fact that these organisms were single-celled
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What is newborn and observes central cyanosis. what type of congenital heart defect usually results...
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