Related to finale: three months later, you can see that the spots in the mri appear to be smaller. using what you know about the structure of a neuron, explain what is happening to the neurons in the area where the lesions are disappearing.

The neuron start their function properly and efficiently again after the disappearing of lesions in the region.

The neurons start their function again in the area where the lesions are disappearing because the lesion is the damaged area of tissue so if the lesion disappear it means that the damage region recover again.

A lesion is any damage or abnormal change that occurs in the tissue of an organism caused by disease or trauma so we can conclude that the neuron start their function properly and efficiently again after the disappearing of lesions in the region where it was present earlier.

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Explanation:

Leison is what is been seen in the brain as white Spot it is as a result of activities carried out in the brain. MR monitors how blood flows into a part of the brain will then transfer the lesion into the brain.

Myaline sheets surround the nerves cells forming a layer round the axons.

Break down of Myaline sheathe leads random shot of neurons this then result in white leison. The leison disappers after the myelin sheat have been healed or repaired by the actions of the neuron present.

Neurons then carries signals or impulse that the myelin sheat have been fixed.

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.