Fill in the blanks with suitable words.

Scientists have recently reported that (a) ----- surface ice caps are (b) ----- This is due to a rise  (c) ----- atmospheric temperature known (d) ------ the greenhouse effect. According to the scientists,the carbon dioxide is primarily responsible (e) temperature rise in (f) ------. The carbon dioxide is high when coal and oil (g) ------ burnt.The gas is accumulating (h) ----- the atmosphere and causing the temperature to rise. As a result, the polar ice in the North and South poles (i) ------ melting. We should maintain the ecological (j) ------ of the environment.