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:
During the first year of life, your baby will grow and develop at an amazing speed. Her weight will double by 5 to 6 months, and triple by her first birthday. And she is constantly learning. Major achievements—called developmental milestones—include rolling over, sitting up, standing and possibly walking.
Explanation:
Rolling over, crawling, walking, and talking are all considered milestones. The milestones are different for each age range. There is a normal range in which a child may reach each milestone. For example, walking may begin as early as 8 months in some children.
Answer: white blood cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders
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Answer:
1. Increases metabolism
2. Decrease risk of heart disease (improves heart health)
3. Controls weight