The world is facing many problems recently. One of them is overpopulation, and it is a major dilemma and a cause of an economic and environmental crisis. Both in first and third -world countries ,we will discuss them as well as the solutions . The rising number of different kinds of industries and the increasing demand for food and water, resulted in air and water pollution, thus having new kinds of disease. for ,example the number of cancer had elevated in this century compared to the last one especially breast cancer and lung malignancies. , furthermore climate change is also one of those problems, and now we are suffering from sudden fires in the forest such as Amazon forests, which led to a decrease in the oxygen and creatures in it as well. all this has negative impacts on us in different ways, financially and even environmentally. we can solve this by raising the awareness of the nations both in poor and rich communities, so not only the government...