None of the above
The Great Lakes
From the low tidemark to the continental shelf
From the continental shelf to open ocean
From the high tidemark to open ocean
From the high tidemark to the low tidemark along shore
Kelp reef:Temperate water
Salt marsh:Temperate water
They are a home for many underwater plants and animals.
Migratory birds use them as a feeding ground.
Many commercial fish species breed in them.
Both A and C.
Both B and C.
Mangrove swamps can survive in cold temperatures.
Mangrove trees can survive in water with low oxygen levels.
Mangrove tree roots are completely under water.
Mangrove swamps are in no danger due to human destruction of the swamps.
So you would not be carried away by the tides
So you could make a bigger home
So you could get more oxygen
It would not be advantageous to burrow into the sand.