1) What is the difference between excretion and egestion? 2) What are the three main types of excretory products in Humans? 3) What are the two waste products of respiration? 4) What is excretion? 5) How do our bodies excrete carbon dioxide? 6) How do our bodies excrete heat? 7) How do our bodies get rid of old red blood cells? 8) How do our bodies get rid of urea produced from protein metabolism?

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