Question: What do you believe is the most significant pollution threat to the global ecology, and why? (Provide scholarly sources to support your argument.) Discuss the current trends of carbon dioxide in the atmosphere. Is it an alarming increase? Is it a reversible trend? What are the implications if current trends continue? (The "Global Warming" video will be very helpful for this question/topic.) (Be sure to cite sources for any statements of fact that you offer.) Need Assignment Help?