Why is saltwater heavier than <span title="freshwater?-----------What">freshwater?-----------Wha...</span> is an estuary?

Question

why is saltwater heavier than freshwater?

Why is Long Island Sound considered an estuary?

You are a boat near a mouth of a river that flows into an estuary. How would salinity change if you traveled to the open ocean end of the bay?

Why is salinity considered an important abiotic factor in an estuary?

Answer 1

Saltwater is heaver than freshwater because it has allot of salt in it

Answer 2

1) Saltwater is heavier than freshwater because the grains of salt have mass.

Answer 3

Because IT HAS SALT IN IT.  Duh!

Answer 4

An estuary is a semi-enclosed coastal body of water with one or more rivers or streams flowing into it, and with a free connection to the open sea. The grains of salt weigh more.