Question

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 areas where freshwater from rivers and salt - water from the ocean mix. They are well - known for being spawning and nursery grounds for numerous marine animals due to their relatively calm waters, abundant food resources, and protection from predators. Adding oxygen to ocean water is mainly the role of phytoplankton through photosynthesis. Removing carbon dioxide from ocean water is also related to the carbon cycle and photosynthetic organisms. Estuaries do not remove salt from ocean water.

Answer:

A. providing spawning and nursery grounds for many marine animals