Examlex
Today,more than _________ species have been described.
Tomboy
A girl who exhibits behaviors, interests, or characteristics typically associated with boys, often involving a preference for activities regarded as masculine.
Testosterone
is a primary male sex hormone that plays key roles in health and well-being, including the development of male reproductive tissues and secondary sexual characteristics.
Estrogen
A group of hormones playing a crucial role in the development and regulation of the female reproductive system and secondary sex characteristics.
Y Chromosome
A sex chromosome that is typically present in males, combined with an X chromosome, and determines male biological characteristics in humans.
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