Answer:
the upper ( warmer)
thermocline
deep( cold)
Explanation:
thermocline is not cold nor hot its just between
<span>no because organisms such as humans are omnivores they can eat both meat and plants and may act as 1st,2nd or 3rd level heterotroph.</span>
The answer is, "C", "Heat".
The answer to the blank i think is bond im not 100% sure though..