The untreated human waste may never be dumped in inland waters. This is because it is illegal and may also affect the creature that live in the waters. The untreated human waste must be stored in a reservoir in the ship and later disposed in appropriate sewages that are on land.
The answer would be C. Energy is used through the food chain so energy always decreases. Population size would commonly decrease according to the pyramid of food chain but since there's no answer for that, C would be the most suitable
G) The objects must be different temperatures
The way that heat transfer works is that the warmer object transfers energy to the colder one in order to reach equilibrium
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