A geologist is studying rock near a fault. She takes core samples starting near the fault and moving away. The table below lists the rocks in each sample. Area 1 is closest to the fault, Area 3 is farthest away. If a fourth sample were taken farther from the fault, where would you expect to find rock layer X. The choices are
farther from the surface
at the bottom of the sample
in the same location
closer to the surface

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.

if someone had the list of traits you provided