Mark the correct answers:    According to the text, what is considered the enormous environmental challenge of the 21st Century? The changes to the atmosphere and the climate are considered the enormous environmental challenge of the 21st Century. The text states that the climate change was caused: for the most part by largely by human action. The German Government decided: to get out of nuclear energy by 2022. According to the text, what is planned for 2022 at the latest? Germany: will shut down the last nuclear power reactor