The graphs below shows rice cultivation and atmospheric methane concentrations. What is the main takeaway point from this figure? 50 400-a |Methane | Irigated and lowland rice 40 300- Rice (1,000 km²) 200- 30 % of moder 20 value 70 ppb 100- 10 750 b 700 CH, 650- 100 ppb (ppb) 600 550 6,000 5,000 4,000 3,000 2,000 1,000 Years ago To illustrate how rice cultivation is a major terrestrial sink of carbon To explain the population explosion in Asia prior to the Industrial Revolution To show how expansion of wetland farming practices may have increased atmospheric methane over the past 5000 years To convey the importance of irrigation for supporting large populations and providing food for livestock To illustrate how forest clearance impacted atmospheric CO2 concertation in the Early Anthropocene

Applications and Investigations in Earth Science (9th Edition)
9th Edition
ISBN:9780134746241
Author:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Publisher:Edward J. Tarbuck, Frederick K. Lutgens, Dennis G. Tasa
Chapter1: The Study Of Minerals
Section: Chapter Questions
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The graphs below shows rice cultivation and atmospheric methane concentrations. What is the main takeaway point from this figure?
50
| Methane
| Irrigated and lowland rice
400- a
40
300
30 % of
modern
Rice
(1,000 km²) 200F
70 ppb
20 value
100
10
750
b
700-
(ppb)
CH,
650-
100 ppb
600
550
6,000
5,000
4,000
3,000
2,000
1,000
Years ago
To illustrate how rice cultivation is a major terrestrial sink of carbon
To explain the population explosion in Asia prior to the Industrial Revolution
To show how expansion of wetland farming practices may have increased atmospheric methane over the past 5000 years
To convey the importance of irigation for supporting large populations and providing food for livestock
To illustrate how forest clearance impacted atmospheric CO2 concertation in the Early Anthropocene
Transcribed Image Text:The graphs below shows rice cultivation and atmospheric methane concentrations. What is the main takeaway point from this figure? 50 | Methane | Irrigated and lowland rice 400- a 40 300 30 % of modern Rice (1,000 km²) 200F 70 ppb 20 value 100 10 750 b 700- (ppb) CH, 650- 100 ppb 600 550 6,000 5,000 4,000 3,000 2,000 1,000 Years ago To illustrate how rice cultivation is a major terrestrial sink of carbon To explain the population explosion in Asia prior to the Industrial Revolution To show how expansion of wetland farming practices may have increased atmospheric methane over the past 5000 years To convey the importance of irigation for supporting large populations and providing food for livestock To illustrate how forest clearance impacted atmospheric CO2 concertation in the Early Anthropocene
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