Explain elaborately the natural barrier methods.
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Natural methods work on the principle of avoiding chances of ovum and sperms meeting. Periodic abstinence – couples avoid or abstain from coitus from day 10 to 17 of the menstrual cycle when ovulation could be expected ie. ... Barrier methods-ovum & sperms are prevented from physically meeting with the help of barriers.
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A natural barrier refers to a physical feature that protects or hinders travel through or over. Mountains, swamps, deserts and ice fields are among the clearest examples of natural barriers.
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