What method has the IPCC used to demonstrate a human cause for recent climate changes? Why can’t we do a proper manipulative study to prove a human cause? 10. What are five key ideas in the Paris Accord? 11. List 5 to 10 effects of changing climate. 12. What is a climate stabilization wedge? Why is it an important concept? 13. What are several of the “Drawdown” solutions, and which ones are most effective?
SID#: KERCISE Using Figure 3.4, fill in the table below to understand the relations among these different components of clastic sedimentary rocks. % Rock Fragments % Rounding % Quartz % Sorting >95% 90% 20% rounded 40% 100 / If a rock has 90% Quartz Grains… – abo 90%. Many – — we abundant rock frags …. Round clasts artz Grains – – – Percent of sediments Quartz Grains Sorting. —- – – – Rock Fragments Younding Few_ rare rock frags-single minerals Angular class 0 – Short Long Transport Distance Figure 3.4 Schematic graph showing the changes in sediments with transport distance along a river. When Alfred Wegener was formulating the plate tectonics hypothesis, he used his knowledge of depositional environments to infer that continents had drifted. Wegener knew the distribution of coal deposits around the world, and knew that coal formed in swamps that required warm climates. Yet, he knew coal deposits were found in cold places like Siberia and Pennsylvania. He hypothesized that the relationship between the sun and earth had not changed (it hadn’t been warmer at the North and South Poles), so he concluded that the only way that coal could be found in cold climates is if the continents themselves had moved away from the equator and toward the poles.
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