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Home Q & A Board Biology-Related Homework Help General Biology
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fokkdsn fokkdsn
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6 years ago
Our skin has over 200 types of yeast, protozoa, and bacteria on its surface. How do these normal flora act as a protective barrier to pathogens?
 
  What will be an ideal response?

Question 2

Four of the five answers are features of the echinoderms. Select the exception.
 
  a. spiny skin
  b. decentralized nervous system
  c. radial symmetry
  d. a water-vascular system
  e. a mantle
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EEEEEricaEEEEErica
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6 years ago
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fokkdsn Author
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#2
6 years ago
I know you spent a lot of time finding this because I swear it wasn't in my textbook
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#3
6 years ago
You're partially right, it's found midway in the chapter, but not at all easy to find. Good luck with the rest
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