Question 19 typically, volcanic eruptions o a do not result in significant long-term climate change. o b. result n címate cooling because ofthe extra ash in the atmosphere. c. result in climate warming because they release so much methane. o d. result in climate warming because they release so much carbon dloxide question 20 which of the following is/are the major factors that contribute to climate? a. temperature o b. temperature and storms storms and precipitation. od temperature and precipitation question 21 mage below is of the keeling curve this tells us that the concentration of carbon dioxide in the earth's atmosphere over the past 50 yeans 400 360 340 oa fluctuates on a 10-year cycle. o is constant od. is increasing.