The best and most correct answer among the choices provided by the question is letter A "<span>decreases the present and future risk to human properties"</span><span>
</span>A seawall (or sea wall<span>) is a form of coastal defense constructed where the </span>sea<span>, and associated coastal processes,</span><span> impact directly upon the landforms of the coast.</span>
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The temperature at tropic region is warmer than the polar temperatures due to angle of the sun.
The tropics which is located near the equator are hotter than the arctic region i.e. north and south poles because the sunlight falls directly on the tropic regions at 90 degrees while on the other hand, the sunlight falls on the poles not directly and form angle lower than 90 degrees.
The amount of solar energy in a given area is greater at the equator and tropic regions than in an equal area at the poles so that's why the temperature at tropic region is warmer than the polar temperatures.
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Answer:
potential energy to kinetic energy
Living components in a river ecosystem would include all plants, all animals, all microorganisms. Every fish species, every arthropod species, every reptile and amphibian species, all the birds, etc.