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  • In Biology

    July 06,2017

    The Human Excretory System

    The excretory system is an important part of the human body. When the human body breaks down food, it uses as many of the nutrients as possible to fue...

  • In Biology

    July 06,2017

    The Role Blood Plays in Your Body

    Blood is the fluid that sustains life in animals with a closed circulatory system — including you. Some blood cells carry oxygen, which is necessary...

  • In Biology

    July 06,2017

    The Types of Skeletal Systems

    Skeletons support animals, give their bodies shape, and protect their internal organs, but not all animals have the same type of skeleton. Following a...