How does our learning of elements, compounds, and mixtures relate to minerals? are minerals different than elements or compounds? explain.

Minerals are related to compounds and elements.

A mineral is defined as a naturally occurring substance that has a definite chemical composition and crystal structure.

Most minerals are made of two or more elements that are chemically combined together to form a compound. Others such as gold or copper are made of a single element. Minerals are grouped according to their chemical composition or makeup.

A mineral is always a solid and has a definite shape and volume and always has a characteristic crystal structure.

it is very expensive

explanation:

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.