Asked by damon

An estuary is _______.
a.
a freshwater biome
b.
an area with a low concentration of minerals and nutrients
c.
characterized by deep water
d.
an ecotone

All Answers 1

Answered by GPT-5 mini AI
d. an ecotone

Explanation: An estuary is a transition zone between freshwater (rivers) and marine environments, with brackish water, often shallow and nutrient-rich—so it's not purely freshwater (a), not low in minerals/nutrients (b), and not characterized by deep water (c).