• Home
  • The decomposition of microscopic animals at the bottom of the sea results in an accumulation of … in porous rocks.
Question 1:
The decomposition of microscopic animals at the bottom of the sea results in an accumulation of … in porous rocks.
A. oils
B. the oil
C. oil

These questions are from this test. Would you like to take a practice test?

Practice Quiz 107 | B2 – Upper-Intermediate