Andreas wrote the following hypothesis: "If the number of livestock on Earth increases, then the amount of methane gas in the
atmosphere will increase because cows produce methane gas as a by-product of digestion."
What scientific question is his hypothesis most likely addressing?
•What is the effect of livestock on the amount of methane gas?
•What is the effect of livestock on Earth?
• What is the effect of methane gas on the atmosphere?
•What is the effect of methane gas on digestion in livestock?