8 Read this passage from NASA about climate change. Based on the details in this paragraph, what is the best one-sentence summary?
Various natural physical processes modify the atmosphere, oceans and land surfaces on short and long-term scales. In the past 150 years, human
activities have resulted in significant changes in many aspects of Earth's environment, including increases in greenhouse gas concentrations,
modifications of the nitrogen and phosphorous cycle and major alterations of land use (e. g., deforestation). It is crucial that we understand the
Interaction of human-caused alterations and natural changes to predict future changes in the Earth's environment. In turn, this information will assist
sustainable development in relation to human activities while minimizing degradation of the environment and limiting the vulnerability of society to
climate change.
All of the damage to Earth's environment has occurred in the last 150 years, so it will be fairly easy for scientists to limit the damage of climate
change in the future.
Climate change is a name that describes all of the natural processes that man cannot control.
Climate change is entirely caused by the actions of people that have altered land use and increased greenhouse gas concentrations.
It is important to study how human-caused changes and natural changes are both affecting the earth in order to make predictions about what might
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