which-statement-best-contrasts-primary-production-in-pelagic-and-benthic-zones

Question

Which statement best contrasts primary production in pelagic and benthic zones?

Accepted Answer

Pelagic relies on photosynthesis; benthic often relies on chemosynthesis.

Answer

Pelagic zones have no primary production processes.

Answer

Benthic zones are dependent on tidal movements for primary production.

Answer

Both zones rely exclusively on photosynthesis.