Submitted by examrobotsa on Thu, 01/01/1970 - 05:30 Consider the following: 1. Solid waste treatment 2. Natural wetlands 3. Ruminant animals Which of the above can cause methane emissions and thus can contribute to global warming?1 only 2 and 3 only1 and 3 only1,2 and 3stats: 0,5624,1544,312,704,528,5624