The upper class consisted of the royal family, rich landowners, government officials, important priests and army officers, and doctors. The middle class was made up chiefly of merchants, manufacturers, and artisans. The lower class, the largest class by far, consisted of unskilled labourers.
Answer:
last one "trees that lose their leaves in the fall"
You see, we are more likely to find tropical rainforest and jungles on a hot and sunny location like on the equator. In fact, desert doesnt always have to be hot at all, for instance, the antarctica. Deserts are formed on locations with different climates and less precipitation. And unlike the locations on the equator, which receives high amount of rainfalls, deserts receive way too little, thus, affecting the vegetation and growth in the area.
The correct answer is - carving terraced farmlands.
The Incas revolutionized the agriculture in South America by starting to use the carved terraces for production. With this technique, the Incas managed to maximize the arable land area, and to perform farming on places where naturally will be impossible. This method is widely used nowadays, and since the amount of arable land is reducing in the lowlands, it is of great benefit for food production in places that are not suitable for building.
