It helps prevent illness because they washed their hands and if they didn't 1 that would be nasty and 2 no one want pee or poop on their food that they are going to eat.
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Explanation:
no i dont have i am sorry
The answer for this problem would be Proteins
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There's more than one type of development, please explain. But if you mean the zygote development, then : when the egg cell and the sperm cell connect to each other , a fertilized egg is formed, known as a zygote. It changes place from the oviduct to the uterus and it start to develop from a zygote to a fuetus, to an embryo. Youre welcome