21A benefit of cap and trade pollution control is

Group of answer choices

it ensures all emitters reduce their pollution be equal amounts (in total reduction)

it minimizes the cost of reduction

it ensures we will reduce pollution until the marginal benefit of further reduction is 0

it ensures all emitters reduce their pollution be equal percentage amount relative to the initial baseline

22.Bryan's father is a very good cook. He makes lots of food on Saturday and puts all the leftovers in the refrigerator. All family members have access to the refrigerator and everyone loves the food. This sounds like

Group of answer choices

A classic tragedy of the commons in the making

A classic club good problem in the making

A classic case of natural monopoly

A classic club good problem in the making

23.In measuring global poverty Hans Rosling showed how

Group of answer choices

The goal of halving global poverty between 1990 and 2015 was admirable but we still have not quite achieved it

The goal of halving global poverty was easily met between 1990 and 2015

The goal of halving global poverty between 1990 and 2015 may have sounded great but things have gotten far worse

Extreme poverty was completely eradicated by 2015

24.Globally, in the last few decades,

Group of answer choices

the number of people in "extreme poverty" has been fairly constant as a share of global population but has risen in absolute numbers

the number of people in "extreme poverty" has been falling rapidly as a share of global population but has remained fairly constant in absolute number

the number of people in "extreme poverty" has been rising rapidly as a share of global population and also in absolute number

the number of people in "extreme poverty" has been falling rapidly as a share of global population and also in absolute numbers

the number of people in "extreme poverty" has been fairly constant as a share of global population and also in absolute number

the number of people in "extreme poverty" has been falling rapidly as a share of global population but has increased in absolute number