Final answer:
Agriculture has altered carbon and water cycles through practices such as deforestation, animal husbandry, and crop irrigation.
Step-by-step explanation:
Agriculture has significantly altered the cycling of carbon and water through various practices. Three examples of how agriculture has impacted these cycles are:
- Deforestation: The conversion of forests into agricultural fields releases carbon dioxide into the atmosphere and disrupts the water cycle by reducing evapotranspiration from trees.
- Animal Husbandry: The large numbers of land animals raised for agriculture result in increased carbon dioxide levels due to respiration and methane production. This impacts the carbon cycle and contributes to climate change.
- Crop Irrigation: Agriculture requires extensive water use, especially for irrigation. This alters the water cycle by diverting water from natural sources and potentially depleting them.