Which of the following is heaviest?

Proton
Electron
Quark
Photon

Deaths by traffic accidents are more likely to occur in a. high-income countries b. middle-income countries c. agrarian nations d. poor countries e. industrialized nations

Afarm grows soybean and produces chickens. the opportunity cost of producing each of these products increases as more of it is produced. draw the? farm's ppf. label it ppf0. the farm adopts a new technology which allows it to use fewer resources to fatten chickens. draw a ppf that illustrates the impact of the new technology. label it ppf1.

William poole believes economics should be taught in schools because students will learn