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rachelkimq rachelkimq
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6 years ago
As an animal ages, the amount of cross-linking of collagen in tissue
 a. tends to decrease.
  b. tends to increase.
  c. tends to remain unchanged.
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haylsm112haylsm112
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6 years ago
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rachelkimq Author
wrote...

6 years ago
Thank you, thank you, thank you!
wrote...

Yesterday
Good timing, thanks!
wrote...

2 hours ago
Correct Slight Smile TY
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