Methane has the same effect in the atmosphere as carbon dioxide. As more livestock are raised to provide food for humans, what is the most likely effect of the increase in methane?

The average temperature of Earth has increased approximately 0.8°C in the last one hundred years. Which of the following do researchers most attribute to this temperature increase?

Paleoclimatologists study the climate and its changes throughout Earth’s history. What observation by paleoclimatologists led scientists to predict that the average temperature of the planet is rising due to the combustion of fossil fuels?

What effect would a long­term rise in the average surface temperature have on the oceans?

Which of these is a threat to the survival of an ecosystem?

Global warming affects sea levels. Which of these is a likely consequence if the trend of global warming continues in coming decades?

Can we reduce or reverse the effects that burning fossil fuel has on atmospheric carbon by stopping deforestation?

Carbon is required for photosynthesis. Where does the required carbon come from?

The average global ocean temperature in 1912 was 15.8°C, and in 2011 this temperature was 16.5°C. Algae have an optimal growing range of 16°C to 27°C. What is the predicted impact of the change in average ocean temperature on algae?

What are two natural phenomenon that can be attributed to global warming?

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