Why is china's urban system such a good example of central place theory?

What is the earth matial ot igneous rock

In a world that produces enough food for every human, why is the distribution of food consumption and production so unequal? in a few sentences, explain why production and consumption of food is lower in the least-development countries (ldcs).

Mengapakah wujudnya perbezaan tanggapan terhadap sumber?