University of Central Florida (UCF) PHY1038 Physics of Energy, Climate Change and Environment Practice Exam 2

Carbon sinks are natural systems that absorb more carbon dioxide from the atmosphere than they release. This process plays a crucial role in mitigating climate change by removing CO2, a greenhouse gas, from the atmosphere and storing it in various forms.

The options provided highlight different aspects of carbon sinks. The statement regarding the types of carbon sinks, which include forests, oceans, and wetlands, is accurate as these ecosystems effectively absorb significant amounts of carbon. Additionally, the assertion that carbon sinks are essential for balancing the carbon cycle is also true because they help maintain equilibrium in the levels of carbon dioxide in the atmosphere.

Furthermore, the role of carbon sinks in reducing the impact of climate change is well-documented. By sequestering CO2, they contribute to fewer greenhouse gases in the atmosphere, thereby lessening global warming effects.

The incorrect statement is that carbon sinks release more carbon dioxide than they absorb. This does not align with the fundamental definition of a carbon sink, which describes a system that has a positive net carbon absorption. In summary, the correct answer effectively identifies a misconception about carbon sinks' function.