Examlex
Use the periodic table to predict the most stable oxidation state for the following element: Pb
Primary Sex Characteristics
The main organs and structures directly involved in reproduction, including the ovaries in females and the testes in males, present from birth.
Secondary Sex Characteristics
Physical features that emerge during puberty which distinguish the sexes but are not directly involved in reproduction, such as breast development in females and facial hair in males.
Female Breasts
Glandular organs on the chest of females that are capable of producing milk for breastfeeding, also playing a role in sexual attraction.
Male Testes
The primary reproductive organs in males, responsible for the production of sperm and the hormone testosterone.
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