The correct answers are:
- barter;
- gold;
The barter and the gold were the most common things used in the Ancient world for trade. The barter, or bartering, is essentially the exchange of goods, or rather one good for another good. That of course goes in accordance to the valuation of the goods, so for example, one goat would be traded for ten rabbits. The gold, on the other hand, was a materialistic thing used for exchange of goods. The gold was very highly valued, so each amount of gold had certain valuation, and according to its valuation the people were able to purchase certain goods with it. The gold was in a many ways what the paper money are in the present day.
Answer: Periodic maintenance refers to activities performed on equipment based on a set time interval. The purpose of periodic maintenance, or time based maintenance, is to maintain smooth operation of a machine or other asset.
<span>The answer is letter A which is increasing predator population. The prey inhabitants rapidly increase in which this is tailed by an increase in the predator inhabitants. In addition, as predators eat the prey their population goes down since there is less to eat and the predator inhabitants also goes despondent.</span>
Answer:
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The tectonic plates are always slowly moving, but they get stuck at their edges due to friction. When the stress on the edge overcomes the friction, there is an earthquake that releases energy in waves that travel through the earth's crust and cause the shaking that we feel.
The transhumance and the nomadic ranching may seem very similar, but they are not and they have one very big important difference between them. The transhumance ranching is the type of ranching where the ranchers are moving their livestock seasonally. That usually happens twice a year. The movement occurs when the season change. It is driven by the climate, and it can be when there's wet and dry season, or warm and cold season, and the movement can be vertical, from the mountains toward the lowlands and vice versa, or horizontal, toward places with more suitable weather conditions at that period. The The nomadic ranching, on the other side, is a type of ranching where the livestock is moved constantly, almost on a daily or 799727#readmore
