Estuaries may be either brackish or freshwater systems. true false 2. estuaries, much like wetlands, are breeding ground for many marine species as well as water fowl. true false 3. the biggest threat to the health of our estuaries is the erosion due to the constant movement of water, either tides, sea level flux, or currents. direct and indirect activities of man that contribute to pollution and deposition of sediments.

1) True

2)True

3) direct and indirect activities of man that contribute to pollution and deposition of sediments.

Explanation:

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the most common energy conversion is from kinetic energy to potential energy, and then from potential energy to kinetic energy.

later on comes the heat energy, mechanical energy, and other energy conversions.

this energy conversion is so common that we can find it in our day to day lives as well.

- one of the most common energy conversions involves the changing of potential energy to kinetic energy or kinetic energy to potential energy