Multiple Choice
Which is about foraminiferans is true?
A) Different species are important markers of geological time periods.
B) Shells are composed of silica.
C) They are a valuable source of petroleum and fossil fuels.
D) They contain photosynthetic endosymbionts.
E) They are responsible for the majority of sandstone found on the ocean floor.
Correct Answer:

Verified
Correct Answer:
Verified
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