CC.know.causes - Display Order - The global CO<sub>2</sub> concentration in the atmosphere has increased during the past 250 years.

CC.know.causes - Display Order - Climate change is mainly caused by human activities.

CC.know.causes - Display Order - With a high probability, the increase of CO<sub>2 </sub>is the main cause of climate change.

CC.know.causes - Display Order - Climate change is mainly caused by natural variations (such as changes in solar radiation intensity and volcanic eruptions).

CC.know.causes - Display Order - The last century's global increase in temperature was the largest during the past 1000 years.

CC.know.causes - Display Order - The 90s were globally the warmest decade during the past century.

CC.know.causes - Display Order - Today&#39;s global CO<sub>2</sub> concentration in the atmosphere already occurred in the past 650,000 years.

For the next few decades, the majority of climate scientists expect… - … a warmer climate to increase the melting of polar ice, which will lead to an overall rise of the sea level.

For the next few decades, the majority of climate scientists expect… - ... an increase in extreme events, such as droughts, floods, and storms.

For the next few decades, the majority of climate scientists expect… - … a cooling-down of the climate.

For the next few decades, the majority of climate scientists expect… - … a warmer climate to increase water evaporation, which will lead to an overall decrease of the sea level.

For the next few decades, the majority of climate scientists expect… - ... an increase of the number of heat-related illnesses (e.g. hyperthermia) and deaths due to more frequent and longer heat waves.

For the next few decades, the majority of climate scientists expect… - ... the climate to change evenly all over the world.

For the next few decades, the majority of climate scientists expect… - ... a precipitation increase in every region worldwide.

For the next few decades, the majority of climate scientists expect… - ... .that too much greenhouse gas in the atmosphere will cause worse air quality and an increase in the number of respiratory illnesses.