Which key Phoenician resource was used as a building material in Egyptian temples?
Limestone is a valuable mineral resource. In its native form it makes for simple sawn stones of comfortable dimension. (Building blocks and pyramids.) As a chemical resource it is the major source of material for making Portland Cement, our common construction material. When limestone is baked to remove the water and the excess CO2, it becomes quick lime of value in agriculture. In this form, it is also used to bind clays in the substrate…
What is the subject and predicate for the sentenceA natural resource is a material found in nature that is useful or necessary to living things?
That could be related to a number of issues. One could be your wheat production. If your main building is at a certain level, you are not allowed to build unless you have a certain wheat production. Another reason is that you are only allowed to build one building/resource field at a time. Romans are excluded from this rule and may build one building and one resource at the same time.
A scarce resource is any material good that has a limited supply. Technically, air is a scarce resource, like all material, due to the law of conservation of matter. However, because it is initially plentiful and renewable on a mass scale, there's little reason to fear a shortage, which mustn't be confused with scarcity.