In An Inconvenient Truth, a graph of atmospheric carbon dioxide shows a regular decrease in the amount of the gas once a year. What time of year does this happen? (1 point) Responses winter and spring in the Northern Hemisphere winter and spring in the Northern Hemisphere spring and summer in the Northern Hemisphere spring and summer in the Northern Hemisphere fall and winter in the Northern Hemisphere fall and winter in the Northern Hemisphere summer and fall in the Northern Hemisphere
1 answer
winter and spring in the Northern Hemisphere