Meredith's office had a large group of people out sick at the same time with the flu. which of the following is the most likely cause of the mass illness? a. lack of cleanliness in the office kitchen b. mutation in the type of flu virus, making it resistant c. germs being spread by person-to-person contact d. inadequate ventilation system in the office

C. Germs being spread by person-to-person contact.

Explanation:

The mass illness to the people in the office can be because of transfer of germs, when the infected person comes in contact or stays along for a long time with the healthy and disease free person. This will lead to the spread of the communicable disease (s) (diseases which spread from one individual to other). The germs responsible for such diseases can be airborne thus invade the body through breathing, can be transferred to the surface of objects, and can be the part of bodily fluids.

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.