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Vestigial organs: visible evidence of structure that was present in an earlier stage of evolution of an organism.one of the sources of evidence of evolution.
example:vermiform appendix in carnivore,ear muscle in man
Blood pressure:The hydrostatic pressure exerted by blood in animal's circulatory system as a result of rhythmic contraction of heart and peristaltic waves of contraction in some blood vessels.
Demography: it's the study of human population and things that effect them.Sympathetic nervous system:This system is important in nervous/emergency condition and associated with fight or flight mode.This system accelerate the heart beat, dilates blood vessels, inhibits the digestion.
Implantation: Attachment of fertilized egg to the walls of uterus at the start of pregnancy
example:vermiform appendix in carnivore,ear muscle in man
Blood pressure:The hydrostatic pressure exerted by blood in animal's circulatory system as a result of rhythmic contraction of heart and peristaltic waves of contraction in some blood vessels.
Demography: it's the study of human population and things that effect them.Sympathetic nervous system:This system is important in nervous/emergency condition and associated with fight or flight mode.This system accelerate the heart beat, dilates blood vessels, inhibits the digestion.
Implantation: Attachment of fertilized egg to the walls of uterus at the start of pregnancy
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