Collect sweet potato, bottle, salt, and water. Take a bottle full of
water and add salt, then put the
sweet potato inside the bottle.
Observe for a few days. What
happens? Note
your
observations. How can you prove
that sweet potato is also a living
thing?

Explanation:

To prove that the sweet potato cell is living we should observe that the sweet potato becomes flaccid. Flaccid - This is when the plant has lost its turgor pressure and in the case of a sweet potato it becomes soft.

answer; bodies of water store heat during the day and release it at

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.