"Nature Effect of human beings on." . . . . . . . . . . . . "Explores the development of farming and agriculture over time, the impact that they have on the environment, and what can be done to lessen that impact." . "Explores the development of farming and agriculture over time, the impact that they have on the environment, and what can be done to lessen that impact."@en . "Explores the development of farming and agriculture over time, the impact that they have on the environment, and what can be done to lessen that impact. Suggested level: primary, intermediate, junior secondary." . . . . . . . . . . . . "Juvenile works" . . "The effects of farming" . . "The effects of farming"@en . "Juvenile works"@en . . . . "Agriculture Environmental aspects." . . "Agricultural ecology." . . "Ecology." . .