Answer: [B]: "tropical rainforests" .
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Chloroplasts and Mitochondria is your answer
The correct answer is "<span>So that they can maintain the salinity of their aquaria or aquarium to keep their aquatic animals healthy".
Salinity is referred to as the</span><span> </span>measurement<span> of </span>all of the<span> salts dissolved in bodies of water, such as oceans, lakes or rivers. Salinity is </span>generally<span> measured in </span>elements which is keeping within <span>thousands place.</span>
