Which of the following are true regarding prescriptions?

Human activities such as the ____________ release large quantities of sulfur.

Suppose the government imposes a Pigovian tax on rice producers. What would this tax be per ton of rice? $[1]

What is the price of rice in competitive equilibrium? $[1]

The type of lens that spreads parallel light is a

Which one of the following is correct about Nash equilibrium?

Suppose the weekly price of rice is $100/ton. How many tons will Manuel sell? [1] tons

Suppose instead that the above scenarios represented the distribution of income before and after automation. How does automation impact the distribution of income if owners replace workers with robots? 

Which of the following statement best describes Earth’s magnetic field?

The element found in most abundance inliving organisms is