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Reproductive system
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How fast can girls grow during puberty?
Up to 12 cm a year
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What is puberty?
The stage when a child's body changes to become an adult and able to reproduce
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What are hormones?
Chemicals in the body that cause changes during puberty
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What is the menstruation?
When unfertilised egg and uterus lining leaves the body
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What is the job of the testes?
To make sperm
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What is the job of the ovaries?
To make egg cells
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What is reproduction?
The process of making new living things
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Name of the male reproductive organ
Testes , sperm duct and penis
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Why do living things need to reproduce??
To ensure their species continues
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What are the male sex cells called?
Sperm
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What is the first change you notice in puberty
Grow very fast
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What is the main job of the reproductive system?
To make special cells(sex cells) for reproduction.
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Name of the female reproductive organ
Ovaries, oviduct, uterus, uterus lining and birth canal
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How fast can boys grow during puberty?
Up to 10 cm a year
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What are the female sex cells called?
Ova(eggs)
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What is the fertilisation?
when a sperm and egg join to form a new life
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At what age does puberty usually start for boys?
Around 13 years old , sometimes from age11
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