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Author Question: Researchers are able to directly measure the rate of productivity in experiments using a ... (Read 22 times)

lracut11

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on: Aug 22, 2018

Researchers are able to directly measure the rate of productivity in experiments using a radioactively tagged atom.
  Which isotope is commonly used?
  a. carbon-12
  b. carbon-13
  c. carbon-14
  d. nitrogen-14
  e. nitrogen-15



Question 2

During times of high productivity which plankton are notable for making the surface water appear milky or chalky?
  a. coccolithophores
  b. dinoflagellates
  c. zooplankton
  d. cyanobacteria
  e. diatoms



tanna.moeller

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Reply #1 on: Aug 22, 2018
Answer to Question 1

c

Answer to Question 2

a


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