Question

_____________ are found in water containing low concentrations of salts, from ponds to estuaries.

a.
Marine ecosystems

b.
None of the above

c.
Freshwater ecosystems​

Answer 1

Explanation:

An estuary is a partially enclosed, coastal water body where freshwater from rivers and streams mixes with salt water from the ocean. Estuaries, and their surrounding lands, are places of transition from land to sea.

Answer 2

Answer:

option a i think.......