1. The profundal zone is often part of the aphotic zone. 2. The relevance of " dark " ( aphotic ) abiotic transformations varies by pesticide. 3. Zones which vary by the amount of light they receive include the photic and aphotic zones. 4. For information on animals that live in the deeper areas of the oceans see aphotic zone. 5. The bathypelagic and abyssopelagic zones are aphotic , meaning that no light penetrates this area of the ocean. 6. 90 % of the ocean lies in the bathypelagic ( aphotic ) zone into which no light penetrates. 7. Much of the aphotic zone's energy is supplied by the open ocean in the form of detritus. 8. The "'Mesopelagic "'( aphotic bathypelagic below, where there is no light at all. 9. The depth of the aphotic zone can be greatly affected by such things as turbidity and the season of the year. 10. The aphotic zone underlies the photic zone, which is that portion of a lake or ocean directly affected by sunlight.
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