Question

which of the following statements best relates changes in the marine ecosystem to a change in climate? some marine species moved farther north or moved to deeper waters because of warmer ocean temperatures in their native ocean habitat. many marine species moved to deeper waters in more northern areas to find conditions that were still warm enough to allow them to survive. some marine species adapted to their environment by evolving traits that allowed them to survive in conditions that were warmer than earlier years were. many marine species migrated between shallow waters and deep waters because ocean level changes resulted in varying depths of water layers at the desired temperature.

Explanation:

To determine the best statement, we analyze the relationship between climate change (warming oceans) and marine ecosystems:

• The first option: Warmer ocean temperatures in native habitats would drive species to move north (cooler) or to deeper (cooler) waters. This directly links climate - induced temperature change to species' range shifts.
• The second option: The description of "finding conditions still warm enough" is inconsistent with the need to escape warmer temperatures; deeper and more northern areas are cooler refuges, so this is illogical.
• The third option: Evolution of new traits is a long - term process, and the question focuses on immediate responses (range shifts) to climate - driven temperature changes, so this is less relevant.
• The fourth option: Ocean level changes are not the primary driver of marine species' depth - related movements in response to climate change; temperature is the key factor here.

Answer:

Some marine species moved farther north or moved to deeper waters because of warmer ocean temperatures in their native ocean habitat.