Fish appear in the fossil record before amphibians. this statement is an example of relative time absolute time

Fish appear in the fossil record before amphibians. This statement is an example of relative time.
Absolute time isn't specific - it refers to time in general, which is the same for everybody. Relative time is more closely connected to a certain event. 

Fish appear in the fossil record before amphibians. This statement given is an example of relative time. The correct answer is relative time. 

The zone your looking for is the intertidal zone.

The open ocean begins at the low-tide mark and extends to the end of the continental shelf

above statement is not a true statement about the open ocean because the open ocean has low levels of nutrients. most of the photosynthetic activity on earth occurs in the open ocean within the photic zone. organisms in the deep ocean are exposed to frigid temperatures and total darkness but it does not begin at the low-tide mark.