As the moon revolves around Earth, the moon O always keeps the same side facing Earth
O does not rotate on its axis
O turns its entire surface toward Earth
O does not reflect light

As the moon rotates around the earth always keeps the same side facing the earth.

Explanation:

The moon is the satellite of the earth, visible during the nights on the planet. The image that it can see of the moon is due to the reflection of sunlight on it.

The moon has rotation movements on its axis and translation around the earth, which occur in a period of 27.3 days, so the moon always shows the same face to the planet earth.

the other options are not correct because:

answer: c

explanation:

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.