Reproductive System

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intercourse = physical sexual contact

fertilization = the union of male and female sex cells to form a zygote [ˈzʌɪɡəʊt] counsel = to recommend STD = sexually transmitted disease HIV = human immunodeficiency virus infertility = a condition that makes a woman or a couple unable to get pregnant
EFL subset that concentrates more on language in context than on grammar and language structures. It covers topics from accounting or computer science to tourism and business management. "Specific" means the studying through a field that is already known and relevant to a student.