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we need energy, how do we beathe, how does the body clean blood, descarga…
we need energy
the respirtori dysten
mouth
trachea
nose
how our diaphragm works
ribage
diaphragm
lung
the exchanga of gases in the body
alveoli
carvon dioxin
oxygen
the uniral system
uretra
bladder
urine
the sweat glangs
pores
epidermis
dermis
what happens to the food we eat
the stages of digestios
ingestion
propulsion
mechanical
the digestion system
stomach
oesopthagus
anus
why does the hart beat
the cirulator system
plasma
vesels
hert
blood circulator
ventues
aorta
vales
how do we beathe
how does the body clean blood
