Answer:
Maintain the heating system. Have your furnace inspected regularly by a qualified professional and change filters once per month.
Install a programmable thermostat.
Turn down the water heater.
Conserve hot water.
Cook up energy savings.
Explanation:
The answer is D.
An estuary is a body of water with a connection to the sea.
Straits are waterways between major bodies of water.
Bays are connected to oceans and lakes and they leave an indentation on the shoreline
Ocean currents act much like a conveyer belt, transporting warm water and precipitation from the equator toward the poles and cold water from the poles back to the tropics. Thus, currents regulate global climate, helping to counteract the uneven distribution of solar radiation reaching Earth's surface.
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