Carbon dioxidehas shown a continual increase since measurements began about 1960.Why are scientists concerned about this rise? A) CO₂ concentrations could become toxic if they increase even a small amount more. B) An increase in atmospheric CO₂ means less in the oceans, where CO₂ is more needed. C) An increase in CO₂ is positively correlated with rising temperatures, one aspect of climate change. D) An increase in CO₂ is inversely correlated with fossil-fuel burning, which causes pollution. E) An increase in atmospheric CO₂ is correlated with declining levels of photosynthesis.

Question

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Scientists are concerned about the continual increase in carbon dioxide levels because it is positively correlated with rising global temperatures, which is one aspect of climate change. This increase in atmospheric carbon dioxide is caused primarily by human activities, such as burning fossil fuels, deforestation, and industrial processes. The consequences of climate change can result in rising sea levels, more frequent and severe weather events, and negative impacts on ecosystems and human health.

Carbon Dioxide has Shown a Continual Increase Since Measurements Began

Carbon Dioxidehas Shown a Continual Increase Since Measurements Began