What is relationship among the location of volcanues, earthquake epicenter, and mauntain ranges?

The relationship among the location of volcanoes, earthquake epicenter, and mountain range is they all are the result of tectonic movement.

Explanation:

A mountain range forms when two tectonic plates of the same strength collide and no one gets over another they crumple and folds to form a mountain.

When two tectonic plates collide a results in a strong vibration called an earthquake and the point where exactly two tectonic plates collided is called the epicenter of the earthquake.

The volcano formed when two one thick and another thin tectonic plate collide the first one gets over another together.  The magma below find an escape and comes out to the surface known as volcano eruption.

Hence,  we can say that all three are related by their origin is the by-product o of tectonic collision.

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estuaries are the partially enclosed coastal bodies of brackish water formed at the mouth of sea where river meets an ocean. it is a transition zone between river and sea water so estuaries are influenced to both marine environment such as tides, waves and to riverine such as flow of fresh water and sediments. the mixing of sea and fresh water provide high level of nutrients, making estuaries a high product habitats.

many estuaries suffers degradation from a variety of human activities like erosion from deforestation, overgrazing, overfishing, drainage and eutrophication.

so from the above statement answers will be

1. false as estuaries are formed due to both brackish and freshwater.

2.true, due to high productivity estuaries are breeding ground for many marine species.

3. direct and indirect activities of man that contribute to pollution and deposition of sediments.