Apopulation of pigs lives on an island together with burrowing termites. pigs that have the longest snouts tend to survive better. over time, most of the pig population is made up of individuals that have very long snouts. this is an example of which type of selection?
directional selection
disruptive selection
stabilizing selection
ecosystem selection

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.

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )

what are the options

explanation: