Which process forms exfoliation domes? reactions with oxygen biological activity frost wedging unloading

The development of an exfoliation dome begins with sheeting(Sheeting, or Contour Weathering, is a type of physical weathering in which a single layer of rock is broken off. The layer, or sheet, tends to break off of the rock in the same shape or form of the rock or gravestone.)

this process occurs in part because of the great lessening in pressure when the superimposing rock is eroded away and unloading and weathering occurs

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.