Because semen swims upstream. The bladder is not located above the vagina (internally). If the ejaculation takes place in the vagina, the semen will swim up towards the cervix.
Answer:
b. blood circulation
Explanation:
Digestion is the process of physical and chemical breakdown of food to allow useful nutrients to pass through the intestinal membranes into blood circulation.
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<em>EXCEPT :</em>
- that nicotine in cigarette smoke binds to hemoglobin and reduces the amount of oxygen delivered to fetal tissues.
<em>carbon monoxide</em> in cigarette smoke binds to hemoglobin and reduces the amount of oxygen delivered to fetal tissues.
Purchase products from recycled materials.