4 is the one that makes the most sense i think
The Jevons paradox occurs when technological progress or government policy increases the efficiency with which a resource is used, but the rate of consumption of that resource rises due to increasing demand.
Answer and Explanation:
A. The main external reason for the fall of the Qing Dynasti was the pressure of the great European powers in commercial relations, which caused a complete political disorganization, within a government that already showed many signs of incompetence and corruption. This led to serious management failures, provoking helping the fallen dynasty.
B. Geographical differences may be the main reason why the collapse of the Ottoman empire and the Qing dynasty unfolded differently. In addition, the political and religious organization of the two regions also influences the different way in which these collapses developed.
<em>the process by which green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water. Photosynthesis in plants generally involves the green pigment chlorophyll and generates oxygen as a by-product.</em>
