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Science Unit One

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Question
Answer
List and describe the characteristics of living organisms.   * Living things are made of cells. * Living things obtain and use energy. * Living things grow and develop. * Living things reproduce. * Living things respond to their environment. * Living things adapt to their environment  
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Define Nutrition   Taking in of nutrients which are organic substances and mineral ions, containing raw materials or energy for growth and tissue repair, absorbing and assimilating them  
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Define Excretion   Removal from organisms of toxic materials, the waste products of metabolism (chemical reactions in cells including respiration), and substances in excess of requirements  
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Define Respiration   The chemical reactions that break down nutrient molecules in living cells to release energy  
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