Answer:
China faces serious social and economic problems associated with overpopulation in the years to come. Overly populated regions lead to degradation of land and resources, pollution, and detrimental living conditions.
Answer:
In the ancient world porcelain was a necessity. For everyday use, it was used to create cups, plates, and other useful items. Exquisite, high-quality porcelains were usually housed as decoration or served as gifts. It was also used to create decorative statues and ornate trinkets for the higher classes.
Overfishing at sea can lead to an extinction.
Overfishing is a serious problem, it affects lot of marine species, at every water corner of the Earth. If the fishing is not controlled strictly it leads to extinction of the marine wildlife, lot of species have already been extinct, thousands are on the verge of extinction. Also, the extinction of a single species makes big problem in the ecosystem, removing lots of species has huge impact on lots of ecosystems that are connected and the consequences are irreparable.
Land value can mean very different thinks but it terms of this context they are talking about its worth. they are not gonna stack concrete building on a good piece of land that can be used for farming. Due to the fact that it is a urban area they make Ignore a golf course or some type of nature reserve so the land isn't harmed but instead put to good use.