Suppose there a crime scene where an adult male, adult female, and a younger child are all found deceased. investigators at the scene wonder if the child is the offspring the two adults. a quick blood typing at the crime scene reveals that the adult male is blood type o, the adult female is blood type ab, and the child is blood type ause a punnett square to explain whether it is possible that the younger victim could be the offspring of the two adults only based on the blood types discovered

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.