Answer:
Large scale solar generation was mostly developed in the 1970s and 1980s, and is considered a clean energy because of its lack of emissions.
The top most layer is called the emergents layer
Spatial thinking is thinking that finds meaning in the shape, size, orientation, location, direction or trajectory, of objects, processes or phenomena, or the relative positions in space of multiple objects, processes or phenomena.
Too many people for China's land and food resources.