What percent of the population of South Africa was black when that country achieved independence? 70 percent
Answer:
Is this the answer, I have a social exam tomorrow, pray for me.
I would believe the answer is A
There were many fantastic engineering achievements by the Inca people. The Great Inca Road can be considered their greatest engineering achievement.
These networks of roads made the four regions connected, spanning over 25,000 miles (6 South American countries in today's geographical landscape). To give a mental image of how long these roads spanned, one could circumnavigate the world in that many miles!
Not only was this an engineering achievement in relation to the sheer span of road laid down, it was also impressive because the landscape was so different along these 25,000 miles. The engineers were innovative in their design of the roads. They used containment walls, dirt support, paved stones, and stairways to ensure that the roads were suitable to the terrain and sustainable to weather and time.
Answer:
a. An opportunity cost
Explanation:
A trade-off is losing one property or ability of a product while gaining another property or ability.
Production possibility refers to the number of products that can be made with current resources available.
The opportunity cost is the cost of the most valuable alternative from a list of options where one has already been chosen. For example if you are going to watch a movie and if you weren't the next best option for you would be reading a book. So, the opportunity cost of watching the movie is not reading a book.