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Home Q & A Board Biology-Related Homework Help General Biology
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chrystalhdz chrystalhdz
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6 years ago
Circulatory systems ____.
 
  a. are found in all animals
  b. result in slow distribution of nutrients and gases
  c. include one or more hearts
  d. are always closed systems
  e. are found in cnidarians and flatworms

Question 2

Some invertebrates move gases across their cell's membrane by ___ through interstitial fluid.
 
  a. active transport
  b. facilitated diffusion
  c. bulk transport
  d. diffusion
  e. osmosis
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ddd856ddd856
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6 years ago
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chrystalhdz Author
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#2
6 years ago
Thank you for helping me with this assignment of mine
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