Final answer:
The likely environmental impacts of each RCP by the year 2100 and the engineering, economic, and sociopolitical behaviors that lead us along each RCP. Options A, B and C are correct.
Step-by-step explanation:
A. The descriptions of RCPs and their implications on various sectors and behaviors.
B. The predictions of environmental changes based on different RCP scenarios and the required actions.
C. The likely outcomes of RCPs on the environment and strategies to mitigate these impacts.
The Representative Concentration Pathways (RCPs) are scenarios that describe the future concentrations of greenhouse gases in the atmosphere. Each RCP represents a different level of radiative forcing and, therefore, different potential environmental impacts.
By the year 2100, these impacts could include changes in climate patterns, melting of polar ice caps, sea-level rise, changes in biodiversity, and more. The specific engineering, economic, and sociopolitical behaviors that would lead us along each RCP vary depending on the scenario, but they involve factors such as energy production, land use, technological advancements, and government policies.