Understanding Externalities

True or false: Externalities are one of the main reasons governments intervene in the economic sphere?

True or false: Externalities can have both positive and negative effects on society?

True or false: Technical externalities occur when the price of a product takes into account the indirect effects on consumption and production opportunities of others?

True or false: Private returns or costs are always the same as the returns or costs to society as a whole?

True or false: Externalities only occur when the indirect effects are large and problematic?