'''Heterosexuality''' is the natural way that human beings and most animals reproduce. It involves union between two members of the opposite gender. Some less complex animals such as worms have both sex organs and can reproduce apart from having a partner.
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'''Heterosexuality''' involves union between two members of the opposite gender. It is the natural way that human beings and most animals reproduce. Some lower forms of life such as worms have both sex organs and can reproduce apart from having a partner.
Heterosexual attraction is natural; that is, men for women, and women for men.
Heterosexual attraction is natural; that is, men for women, and women for men.