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 only
  • 1 and 3 only
  • 1, 2 and 3
Consider the following: Solid waste treatment Natural wetlands Ruminant animals Which of the
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