Answer:
I believe it's a unnatural vs natural
Explanation:
A human border is aline that separates 2 political/geographical areas.
like Iraq's border with turkey
and..
a physical boundary is a naturally occurring barrier between 2 or more areas. including oceans , cliffs.
Answer:
Personal Opportunity Cost - Spare non drive time sacrifised
Social Opportunity Cost - Fuel efficiency (high pollution), Road Traffic (Congestion issues).
Explanation:
Opportunity Cost is the cost of next best alternative, foregone while choosing an alternative. Bill can commute either by bus, or by self drive.
If Bill drives his car, opportunity cost for him is - the spare time sacrifised, that he could have used while car drive in some other activity (eg reading, listening music).
Opportunity Cost for society is - the fuel utilisation & road traffic management efficiency sacrifised, by using private instead of public transport. This leads to more pollution, more congestion on roads.
The first part of an organism’s scientific name is its genus.
It required that all escaped slaves, upon capture, be returned to the slaver and that officials and citizens of free states had to cooperate. Abolitionists nicknamed it the "Bloodhound Bill", after the dogs that were used to track down fugitives from slavery.
