Which of the following have gas chambers that serve as floats and sails that allow the wind to push them across the ocean surface?
A) Cnidarians
B) Coccolithophores
C) Ctenophores
D) Foraminifers
E) Radiolarians
Question 2
What percentage of oil that enters the oceans worldwide is caused by underwater natural oil seeps?
A) 6
B) 22
C) 47
D) 53
E) 72