Answer:
Greek city-states made their own economic and political decisions but shared a common culture.
Tribes consume roots, bulbs, seeds, nuts, berries, ducks, rabbits, squirrel and salmon.
True if your car is atleast a fuew cars ahead than you be fine but it's plight to turn them off when a car is passing on the other side of the road
Answer: Externalities are side effects (good or bad) that occur when a person or a company performs an activity and does not assume all the costs of it, or all the benefits that could be reported. In this way we can distinguish:
Negative externality: Arises when not all the costs of a negative effects are assumed. In these cases, a social cost is generated, since it is the whole society that suffers the consequences of its actions. And the market price does not collect this cost.
Positive externality: Arises from a positive effect that is not reported as a benefit. An example of positive externality that we can mention is scientific research, from which society in general benefits. In these cases, market place do not reflect the real benefits.
