What is the most important producer in both freshwater and marine ecosystems?

Give an example of a situation in which an individual's pursuit of economic self-interest may not benefit but instead harm the rest of society

In the construction of a new housing development which factor of production can be categorized as land?

Which act was a response to three high-profile assassinations? a. the mailing of firearms act b. the national firearms act c. the gun control act d. the brady handgun violence prevention act