The answers are:
- air pollution; the bigger cities create lots of dust, there's always new building sites that contribute to dust and some of the working materials to pollute the air. Also there's big amount of vehicles that release toxic gases, as well as the industry.
- housing shortages; the more people there are at some city, the more difficult it is to have space for everyone, because usually the process of building new homes doesn't correspond with the amount of people coming in.
- overcrowding; the larger the population at some place, the more crowded it gets, be it in traffic, walking, in stores, institutions...
- water pollution; more people means more pollutants in the water they are using, which in return creates water shortages because big portion of the water can not be used afterwards.
- water shortages; the amount of fresh water is limited, so once the population surpases the optimal number problems with fresh water start to occur. To this also contributes the irresponsible usage of water.
Answer:
A market economy is the economic system where the businesses are privately owned, with the possibility of profit.
Explanation:
A is not correct because the traditional economy still has influnce by the government, and even if it strides to privatization, the changes in it are so slow that even decades would not lead to the total change of the economic system.
B is not correct because in the command economy everything is owned by the government and unions (like the ''zadruga''), where everything is controlled by the government.
C is not correct because under a communist system everything is owned by the government.
D is correct because the market economy is an economic system where every business is owned by the private sector, meaning that the people that own businesses are able to make their own decisions, and also it is up to them and their working as to how much profit they will obtain.
The answer is black holes. I hope this helps