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प्रश्न
What substances are contained in vaginal pills, used as contraceptives? How do they work?
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उत्तर
Vaginal pills have spermicides which kill the sperms.
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क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: How do Organisms Reproduce - Exercise 2 [पृष्ठ २१०]
