As the world's population keeps growing, finding sources of food has become more important. Readers discover how challenging it is to produce crops that are healthy for both people and the environment. They learn the methods being used to reduce chemical pesticides, increase nutrients in the soil, and give farmers a more stable source of income. Series Review: Planet Sos"These Well-Designed Books Present Different Aspects Of Life On Earth And How They Affect Human Beings...The Many Large, Colorful Photos Will Engage Readers And Assist Them In Understanding The Important Concepts Introduced."-Sc
