Describe an ecological function of an estuary

Estuaries are of ecological importance because they are a habitat for a number of aquatic animals. Estuaries provide a protected environment to fishes and other organisms where they can safely reproduce. As many river streams flow into an estuary, hence an estuary has abundance of foods and nutrients for the aquatic animals that inhabit here. Estuaries also help the growth of those fishes which are used by humans in abundance hence raising the economy.

c is the answer : )               your welcome

yes, because even though a theory has a  lot of evidence to support it, it is not always true