4.9.1.4 and plants decreased Describe the main 0.5 Extended writing: explain the percentage of carbon changes in the how algae and plants dioxide in the atmosphere atmosphere over time have caused the by photosynthesis. and some of the likely concentrations of carbon causes of these dioxide in the atmosphere Carbon dioxide was also changes. to decrease. decreased by the formation of sedimentary and Describe and explain Describe how sedimentary fossil fuels that contain the formation of formed and locked up carbon. deposits of limestone, carbon dioxide. coal, crude oil and natural gas. WS 1.2, 4.1 4.9.2 Carbon dioxide and methane as greenhouse gases Spec ref. Summary of the Learning outcomes Suggested Opportunities to develop Opportunities to develop Self/peer assessment specification content What most candidates timing Scientific Communication and apply practical and opportunities and should be able to do skills enquiry skills resources Reference to past questions that indicate success
4.9.1.4 and plants decreased the percentage of carbon dioxide in the atmosphere by photosynthesis. Carbon dioxide was also decreased by the formation of sedimentary and fossil fuels that contain carbon. Describe the main changes in the atmosphere over time and some of the likely causes of these changes. Describe and explain the formation of deposits of limestone, coal, crude oil and natural gas. WS 1.2, 4.1 0.5 Extended writing: explain how algae and plants have caused the concentrations of carbon dioxide in the atmosphere to decrease. Describe how sedimentary formed and locked up carbon dioxide. 4.9.2 Carbon dioxide and methane as greenhouse gases Spec ref. Summary of the specification content Learning outcomes What most candidates should be able to do Suggested timing Opportunities to develop Scientific Communication skills Opportunities to develop and apply practical and enquiry skills Self/peer assessment opportunities and resources Reference to past questions that indicate success