Liposomes consist of bilayers that enclose an aqueous compartment where drugs can be contained for delivery to specific tissues if target proteins are present. Liposomes consist of bilayers that enclose an aqueous compartment where drugs can be contained for delivery to specific tissues if target proteins are present. Membrane protein Cholesterol Phospholipids Detergents

Phospholipid bilayer

Explanation:

Liposomes are vesicles are spherical in shape. They consist of at least one phospholipd bilayer most especially phosphatidycholine. Liposomes are artficial vesicles similar to a membrane, because it has an hydrophilic core surrounded by a hydrophobic lipid bilayer.

Liposomes are artificial prepared and are used for the transportation of substances like drugs and nutrients between cell parts, outside of the cell and into the cell.  

In liposomal drug delivery, the liposome fuses with other internal cell membranes at the site of action and releases its liposomal content.

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.