These different sources are classified as Scope 1 2 and 3: - Scope 1 emissions are direct emissions from owned or controlled sources. - Scope 2 emissions are

These different sources are classified as Scope 1 2 and 3: - Scope 1 emissions are direct emissions from owned or controlled sources. - Scope 2 emissions are indirect emissions from the generation of purchased energy. - Scope 3 emissions are all indirect emissions (not included in scope 2) that occur in the value chain of the reporting company, including both upstream and downstream emissions. So grain purchased and shipped to the animals is measured under Scope 3. Powering the lights and machinery on the farm is Scope 2. It's tricky and inexact to do GHG accounting, but the same methodology and emissions factors are used everywhere so at least it's comparable between companies and products.