What significance does the temperate zone have on commercial fishing?
a.
the zone’s clear water makes it easier to catch fish.
b.
the zone mostly consists of large fish that are more commercially viable.
c.
the zone has a greater abundance of commercial species.
d.
the zone has very few mammalian species that compete for the fish.

D.  

The zone has very few mammalian species that compete for the fish.

Explanation:

The zone has very few mammalian species that compete for the fish is the significance that the temperate zone have on commercial fishing.

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