Differentiate between the physical barrier method and the chemical barrier method of contraception.

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Physical barrier method Chemical barrier method
$(1)$ These methods are used to cover the penis in males or the vagina/cervix in females just before coitus to prevent sperm from entering the female reproductive tract. $(1)$ These involve the use of chemical substances like creams,jellies,or foams applied in the vagina before coitus to immobilize or kill sperms.
$(2)$ By acting as a physical shield,they prevent the meeting of sperm and ovum,thereby preventing fertilization. $(2)$ These chemicals act as spermicides,disrupting the metabolic processes or oxygen uptake of sperms,leading to their death and preventing fertilization.

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