The four major areas affected by migration are population, economics, culture and language. Migrants always have their own culture and language which when they go to a place this might affect the people in that place especially when these migrants are many. This might change some perspective of the people native in that place. Of course, population and economics will be affected since these two are greatly dependent on the people in that area.
Slums are areas with high poverty and low prospect of success or development. People from them usually have extremely low incomes and lack education because of this. They threaten democracy because they cannot participate in the democratic process in the same manner that other areas can because they lack public participation and education and similar things that help democracy thrive.
<span>One example is seen in Chapter 9 in which Carson speaks of the problem of keeping the budworm controlled; budworm caterpillars are considered serious pests because of the amount of damage they can do to plant life by feeding. </span>
