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Home Q & A Board Biology-Related Homework Help General Biology
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Eye_opener Eye_opener
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6 years ago
Having species within a community that are redundant with respect to ecosystem functions is called
  the ____.
 
  a. redundancy hypothesis
  b. ecosystem function hypothesis
  c. biological insurance hypothesis
  d. natural community hypothesis
  e. fungal take over hypothesis

Question 2

Old man's beard (Usnea trichodea) and yellow Evernia lichens are sensitive to elevated levels of
 
  a. sulfur dioxide (SO2).
  b. nitrogen oxides.
  c. nitrate.
  d. sunlight.
  e. fluoride salts.
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Replies
wrote...
#1
6 years ago
Answer to q. 1

C

Answer to q. 2

A
Eye_opener Author
wrote...
#2
6 years ago
I'm still confused, but thanks for answering correctly
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