[Earth Systems/Pollution Question]. What is graywater?

A. Household wastewater that does not contain surfactants.

B. Household wastewater except for the wastewater from toilets.

C. Wastewater generated from indoor household usage.

D. All wastewater generated from household usage.

B)Household wastewater except for the wastewater from toilets.

Explanation:

"Well graywater is wastewater generated in households or office buildings from streams without fecal contamination,all streams except for the wastewater from toilets."

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.

instead of copying and pasting things off of tests or work done on computer which im sure you did, try and read over the question carefully