Question

1. estuaries serve which important role for marine ecosystems? a. providing spawning and nursery grounds for many marine animals b. adding oxygen to the ocean water c. removing carbon dioxide from the ocean water d. removing salt from the ocean water

Explanation:

Estuaries are transition zones between rivers and the ocean. They are known for being spawning and nursery areas for numerous marine species due to their sheltered nature and rich nutrients. Adding oxygen to ocean water is mainly the role of phytoplankton through photosynthesis. Removing carbon - dioxide from ocean water is a complex process involving the carbon cycle and not a main role of estuaries. Estuaries do not remove salt from ocean water.

Answer:

a. providing spawning and nursery grounds for many marine animals