26) Cilia are found A) only on cells lining the reproductive tract.
B) on the inside of cell membranes.
C) in large numbers on cells that secrete hormones.
D) in cells that are required to move a fluid medium along their surface.
E) mostly in muscle cells.

c. in large numbers on cells that secrete hormones.

Explanation:

cilia are eyelash like receptors that take in information within chemicals.

not only is it colder, it also becomes darker, less salty, and more dense.

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.