The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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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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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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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.
Structure of a photoreceptor.
Neuron (nerve cell) structure.
external structure of female reproductive system
Methyl-directed mismatch repair in E. coli
Tardigrade wasn't correct, nor was Gastrotricha. What on earth is this asking me.
Which of the following is not a valid resonance structure for N3?