Of the four elements that comprise more than 95% of the plant's biomass, which is not obtained from the air? Question 10 options:

H

C

N

O

An externality can be created by a. people working at a production job and enjoying their work b. a production activity but not a consumption activity c. a consumption activity but not a production activity d. a production activity or a consumption activity externalities a. are always positive, and an example is flu vaccinations b. are always negative, and an example is the pollution created by trucks c. can be negative or positive. logging has a negative externality, and education has a positive externality d. can be negative or positive. a negative externality is having to go to school when you would rather go to the beach, and a positive externality is spending time with your friends

What role did natural resources play in african politics?

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