Deforestation is a major environmental issue in what three nations?

Nigeria, Ghana and Philippines are the three nations where deforestation is a major environmental issue.

Explanation:

Deforestation is the transformation of forested land into non-forested land by the process of cutting trees or burning the entire forest.This removal or destruction has significant results where the forest cover is removed has resulted in environmental degradation with reduced Bio-diversity.Deforestation greatly contributed to greenhouse gas as a result increase in the earth's temperature.

Earthquake waves that vibrate from side to side and up and down only through solids are known as "seismic waves."hope my answer has you : )

None of them. they are likely to occur on any plate boundary