Which of the following is an abiotic factor that shapes a marine ecosystem? a. fish c. depth b. kelp d. coral

the oceanic zone is typically defined as the area of the ocean lying beyond the continental shelf, but operationally is often referred to as beginning where the water depths drop to below 100 meters (328 feet), seaward from the coast to the open ocean.

explanation:

meteorologists would compare a new weather map with one 24 h old to see how fast a front is moving.

not sure if this is what you'r looking for eubacteria and archaebacteria