When you returned to your dorm after the break, you discover something growing in the bathtub. You think it is a living organism. Which of the following would be the most convincing evidence in support of this hypothesis?

It has L-amino acids but not D-amino acids
It appears compartmentalized under the microscope.
It has an organized appearance
It grows in size overnight.

It appears compartmentalized under the microscope.

Explanation:

All living organisms are made up of cells. And cells grow by undergoing cell division.

Also, when viewed under the microscope, cells appear as 'rooms' or 'compartments'

Thus, the growing substance is living and contains cells

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.