In most Southeast Asia the soil is poor. What causes the soil in some areas to be richer and more productive? With mostly poor soil why does plant growth remain strong throughout most Southeast Asia

The climate, parent material, topography, organisms of that area are some of the factors that make soil of that area as a good soil.

Explanation:

One of the most important factors that lead to the development of an area is the productivity of that area and the goodness and the richness of the soil of that area. The soil of a particular area depends on certain factors which defines that whether it will be good or not. Those factors are the topography, the climate, the organisms of that area and so on.

The techniques and the climate of the area of the Southeast Asia leads to the plant growth to remain strong despite the fact that the soil is mostly not very rich of that area.

map scale refers to the relationship (or ratio) between distance on a map and the corresponding distance on the ground. for example, on a 1: 100000 scale map, 1cm on the map equals 1km on the ground.