What is the most effective way to protect dry lands from desertification terrace farming or planting a tree belt

Planting a tree belt.

Explanation:

The most effective method by which the desertification of the soil can be controlled is by planting more and more trees.

The process of desertification occurs when there is a loss of vegetation, water bodies and animals  from a particular area. Loss of trees makes the area look like desert.

So, planting trees along with some irrigation will help to cope with problem.

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

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the answer is mosques. they are an important part of islamic culture.