Heat energy is needed to increase the temperature of an object. The amount of energy needed depends on the mass of the object, the type of material it is made from, and the temperature increase.
Heat energy is also absorbed when substances melt or boil, but the temperature does not alter during a change of state. The amount of energy needed to melt or boil something depends upon the mass of the object and the type of material it is made from
The economies of the United States and Canada have had a very similar development over their recent history.
Both started by being places where the agriculture and fur trade were the basis of the economy, so they were in general engaged into the primary economic sector.
Once the industrialization was introduced, the countries very quickly switched to the secondary economic sector by becoming heavily industrialized and instead of selling raw materials and products, they were manufacturing them.
As they were becoming more developed and wealthier, they had a big advantage over most of the countries in the world, so they were able to start to engage in the tertiary and quaternary economic sectors, which have became the leading economic sectors in the modern times.
I think it is the Biospere
