Agriculture is a relatively small component of the state's economy and varies greatly due to the varying climate across the state. The state ranked first in Mexico for the production of the following crops: oats, chile verde, cotton, apples, pecans, and membrillo. The state has an important dairy industry with large milk processors throughout the state. Delicias is home to Alpura, the second-largest dairy company in Mexico. The state has a large logging industry ranking second in oak and third in pine in Mexico. The mining industry is a small but continues to produce large amounts of minerals. The state ranked first place in the country for the production of lead with 53,169 metric tons. Chihuahua ranked second in Mexico for zinc at 150,211 metric tons, silver at 580,271 kg, and gold at 15,221.8 kg.
Try to answer this question if possible (otherwise reply "unanswerable"): Agriculture varies across the state because of the variation in what?
climate