Examlex
Most acids dissolve metals by the oxidation of H+ ions to hydrogen gas.
Conception
The process of a sperm fertilizing an egg, leading to the formation of a zygote and the beginning of pregnancy.
Prenatal Period
The time from conception to birth; the developmental period occurring before birth.
Sexual Characteristics
Traits that distinguish between males and females within a species, often divided into primary (related to the reproductive system) and secondary (such as breast development or facial hair) characteristics.
Lungs
Pair of respiratory organs situated in the chest, responsible for gas exchange between air and blood.
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