Final answer:
On average, it takes approximately 70 liters of water to produce 1 kilogram of apples in California.
Step-by-step explanation:
The amount of water required to produce 1 apple in California can vary depending on various factors such as climate, irrigation methods, and apple variety. However, on average, it is estimated that it takes approximately 70 liters of water to produce 1 kilogram of apples.
This estimation is based on the concept of water footprint, which considers both the direct and indirect water usage throughout the entire production process of the apple, including irrigation, pesticide use, and transportation.
It's important to note that this estimate is an average value and can vary depending on the specific circumstances of apple production in California.