Grade 12th pass10 grade science
A woman uses pills A to prevent pregnancy for birth control. These pills prevent the ovaries from releasing ovum into oviducts. Another woman uses a chemical B that kills the sperm and prevent pregnancy. The chemical B is :
A woman uses pills A to prevent pregnancy for birth control. These pills prevent the ovaries from releasing ovum into oviducts. Another woman uses a chemical B that kills the sperm and prevent pregnancy. The chemical B is :
